Answer:
S phase is the DNA synthesis phase. During this portion of the cell cycle, the cell replicates its entire complement of DNA. It also forms the centrosome, which is the microtubule-organizing center that will eventually help the cell pull apart the DNA that will be divided between daughter cells.
Answer:
DNA is replicated.
Explanation:
Which is NOT a factor that affects fossilization?
A) age of the organism
B) hard or soft body parts
C) predators destroying the body
D) body decay due to natural elements
Answer:
I think C. predators destroying the body because it's still going to fossilize the same except the body would be in a different shape.
What is gravity's role in plate tectonics?
Answer:
*please mark me brainliest!*
It can be described as "ridge push and slab pull."
Explanation:
The three primary causes for tectonic plate movement are the convection of material in the mantle, gravity and the rotation of the planet. These forces cause each of the seven major plates and numerous other microplates to move independently of the others at a rate of a few centimeters per year.
Gravity plays a crucial role in plate tectonics by influencing the movement and interactions of Earth's tectonic plates. Gravity plays a significant role in plate subduction, which occurs when one tectonic plate sinks beneath another at convergent plate boundaries.
Plate Collision: Gravity acts to compress and deform tectonic plates during plate collisions at convergent boundaries. Mountain ranges, like the Himalayas, are formed when the gravitational force between the plates pulls them together and causes them to bend, fold, and rise.
Isostasy: The Earth's crust is kept in an isostatic equilibrium by gravity. The equilibrium between the upward pull of gravity and the buoyant force of the lithosphere (including tectonic plates) is known as isostasy.
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Carrying capacity is the maximum number of individuals an environment can support for a long period of time. What might happen when population grows larger than the carrying capacity of land?
Final answer:
If a population exceeds its carrying capacity, it will face increased competition for resources, leading to potential die-offs and fluctuation around the carrying capacity. The carrying capacity is not fixed and can change based on environmental conditions.
Explanation:
When a population grows larger than the carrying capacity of the land, several consequences can occur due to resource depletion. Firstly, there would be increased competition for limited resources such as food, water, and shelter. This can lead to a higher death rate, poorer health, and reduced reproductive rates. In some cases, the population may overshoot the carrying capacity and then experience a die-off, where the population size decreases rapidly back to or below the carrying capacity. This process usually results in the population fluctuating around the carrying capacity in an undulating fashion rather than stabilizing precisely at it.
The precise effects and the logistic growth model show an 'S-shaped' curve when a population grows and then levels off as it reaches the carrying capacity. The carrying capacity itself is not fixed and can vary up or down depending on changes in environmental conditions and the availability of resources.
Some scientists speculate that lightning was not
present on early Earth. How could you modify the
Miller-Urey experiment to reflect this new idea?
What energy source would you use to replace
lightning?
Heat the broth in the Miller-Urey experiment to approximately 200 degrees centigrade / 400 degrees Fahrenheit.
Explanation:
Temperatures on early earth were very hot compared to today. This is because even after the earth was formed by collision of matter such asteroids, it took millions of years to considerably cool down and have a solid earth crust and signs of oceans. The temperatures would have plummeted to about 200 degrees centigrade to allow for a biomolecules to begin forming via chemical reactions.
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Final answer:
To adapt the Miller-Urey experiment to a hypothesis without lightning on early Earth, alternative energy sources like UV radiation or geothermal heat could be used to initiate chemical reactions in the primitive atmosphere, simulating conditions that might have led to the formation of organic molecules.
Explanation:
The question asks how one could modify the Miller-Urey experiment if it were speculated that lightning was not present on early Earth and what alternative energy source could be used instead of lightning. In the original experiment conducted by Stanley Miller and Harold Urey, they simulated early Earth's conditions by introducing a mixture of gases believed to be in the atmosphere at the time and then subjected these gases to electric sparks to simulate lightning. This led to the formation of organic molecules, demonstrating a possible path for the origin of life from inorganic matter.
To modify the Miller-Urey experiment to reflect the new idea that lightning was not present on early Earth, one could use an alternative energy source such as ultraviolet (UV) radiation or geothermal heat. Both of these energy sources would have been present on early Earth. UV radiation from the sun could act as an energy source to drive the chemical reactions in the absence of lightning. Similarly, Earth's internal heat could result in geothermal energy causing chemical reactions on the ocean floor, such as hydrothermal vents, which could simulate the energy needed for the formation of organic compounds.
Why is it dangerous to eat wild mushrooms?
Some mushrooms may be poisonous. Even some that aren't poisonous, people may have unpleasant reactions to mushrooms. Even breathing the fumes can poison you.
So in general: poison
I REALLY NEED HELP Time limit
in the late 1980's scientists began to notice that some strains of staphyloccoccus aureus bacteria were becoming resistant to topical antibiotics used by dermatologists to treat acne. By the year 2000 over 100 strains of staphyloccoccus were resistant to almost all antibiotics and scientists had to develop a new plan to kill the. Explain what happened geneticlly in the bacteria population over time as skin infections caused by staphyloccoccus aureus, were exposed to topical antibiotics.
Answer:
D is the answer
Explanation:
The explanation is the answer to the question. basically the lower resistant allele evolved with the mutation to have high resistance to the allele, making it the dominate one.
The hurricane center is MOST likely to be near location ___________ on Monday afternoon.
A) I
B) II
C) III
D) IV
B) II
Explanation:
The hurricane center is in location I on Sunday evening.
It advances forward near location II most likely on Monday afternoon.
Monday evening it moves forward and the hurricane center is almost between location II and IV.
Tuesday evening the hurricane center is in location III.
The National Hurricane Center (NHC) issues the graphical cone representation to show the movement of the hurricane centers for every 12 hours period. The cone is an uncertain representation and keeps growing wider as the uncertainty of the movement of the hurricane centers increases.
Answer:
iv
Explanation: got the answer wrong and iv was the right answer
which of these affect earth’s climate over a shorter period of time?
A. changes in solar output
B. changes in ocean currents
C. changes in orbital shape
D. changes in Earth’s tilt
Changes in Ocean Currents.
Explaination:
The changes in ocean currents affects earth's climate over a shorter period of time.
The ocean influences climate by storing solar radiation, distributing heat and moisture around the globe, and driving weather systems.Ocean currents acts like a conveyor belt.It transport warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, ocean currents regulate global climate.When there is no currents in the ocean, regional temperatures would be more extreme super hot at the equator and frigid toward the poles.The earth's place would be unfit to live in.Answer:
Which is an example of human impact on climate changes?
changes in the tilt of Earth’s axis
global warming
changes in solar output
Explanation:
Answer global warming
As a result of increases in carbon dioxide levels, as well as other greenhouse gases, global temperatures have increased. This increase is called global warming.
Which of the following fields of study relates to the way that human cultures govern and make laws, including laws
about the environment?
Answer:
Political science
Explanation:
Political science can be described as a field under which the systems of the politics and analysis of political activities are done. This field analyzes the various political reforms which might have occur in the past and how politics can be made better. The scientific analysis of the political activities also comes under the branch of political science.
What is the "giant impact hypothesis" and what evidence has been found that supports
this hypothesis?
Answer:
The giant-impact hypothesis, sometimes called the Big Splash, or the Theia Impact suggests that the Moon formed out of the debris left over from a collision between Earth and an astronomical body the size of Mars, approximately 4.5 billion years ago.
evidence: evidence for the giant impact scenario comes from rocks collected during the Apollo Moon landings, which show oxygen isotope ratios nearly identical to those of Earth.
Comparison of the zinc isotopic composition of lunar samples with that of Earth and Mars rocks provides further evidence for the impact hypothesis.
The giant impact hypothesis suggests the Moon was formed from the collision of a Mars-sized body with the Earth, flinging material into orbit that later became the Moon. Evidence such as oxygen isotope similarities and computer simulations bolster this theory, despite geological activity obscuring direct evidence.
Explanation:The Giant Impact Hypothesis
The giant impact hypothesis proposes that the Moon was created from debris ejected into space after a Mars-sized body (approximately one-tenth of Earth's mass) collided with the early Earth. This event is conjectured to have occurred early in Earth's history, and it is suggested that it was one of the largest impacts Earth could endure without being completely destroyed. Due to the magnitude of the impact, material from both the Earth's mantle and the impacting body was thrown into orbit, which eventually coalesced to form the Moon.
Evidence Supporting the Hypothesis
Although direct evidence of such a colossal event is challenging to find due to the geological activity of Earth that continuously remodels its surface, there is supporting evidence for the giant impact hypothesis. This includes the similarity of oxygen isotopes found on the Moon and Earth, which suggests a common origin. Another piece of evidence is the Moon's composition, which is remarkably similar to the Earth's mantle. Additionally, computer simulations match the current Earth-Moon system's dynamics when modeled with a giant impact event.
Which form of virus did Sabin use for the vaccine?
olio?
inactivated
killed
live
Answer
Inactivated
Answer:
Oral poliovirus vaccine or Sabin vaccine, named for its inventor American physician and microbiologist Albert Sabin, was developed. OPV contains live attenuated (weakened) virus and is given orally.
Answer:
inactivated
Explanation:
the vaccine cannot be fully dead otherwise the vaccine wouldn't work. the vaccine cannot be alive because that would give us the disease and we are trying to prevent it. therefore, the vaccine is inactivated
3. A news clip once reported that a long distance runner drank too much water and eventually
collapsed and died? Explain why using what you have learned in this lab and in class.
Answer:
Hyponatraemia can be described as a situation in which there is a decrease in the sodium concentration of serum. Such condition arises due to excess of water due to which the concentration of the solutes becomes a lot lesser. Hence, it is also called as water intoxication.
The long-distance runner collapsed and died because he had consumed so much water that the water concentration in his body had diluted the concentration of vital minerals such as sodium. The drop-down of the sodium concentration was up to dangerous levels.
Final answer:
Water intoxication, or hyponatremia, occurs when too much water is consumed in a short period, diluting blood sodium levels which can lead to severe health issues and even death. It is particularly risksome for athletes who do not replenish electrolytes lost during intense activity. The condition emphasizes the importance of electrolyte balance along with hydration.
Explanation:
The news clip you are referring to likely discusses a rare but serious condition known as water intoxication or hyponatremia. This condition occurs when someone drinks too much water in a short period, leading to a dilution of sodium in the bloodstream. Our bodies need sodium and other electrolytes at specific concentrations to function properly. When these concentrations drop too low, it can result in symptoms ranging from headaches and nausea to more severe consequences like seizures, coma, and even death. The cells may swell from the excess water, particularly dangerous are the brain cells, which can lead to increased pressure inside the skull and possibly death.
Healthy kidneys can typically excrete up to one liter of excess water per hour, but drinking beyond this capacity overburdens the body's regulatory systems. For athletes or anyone involved in extensive physical activity, it is crucial not only to hydrate but also to replenish electrolytes lost through sweat. Simple water rehydration without electrolyte balance can lead to the dangerous dilution effect described. Thus, the runner in the news clip likely suffered from water intoxication due to excessive water intake without adequate sodium and electrolyte replacement.
Considering the new definition of life, all but one piece evidence supports the fact that a virus must be referred to as an organism.
That is:
es 0)
Viruses contain nucleic acids.
Eliminate
Viruses are capable of replication.
Viruses have a simple cellular structure,
Viruses have an evolutionary history and that implies lineage.
Answer:
The correct option is C) Viruses have a simple cellular structure
Explanation:
There is always a debate when considering viruses as a living thing or a non- living thing. Viruses comprise of a genetic material in the form of either DNA or RNA. They have a protein capsid and a tail. They can replicate inside a host cell by by using the host's synthetic machinery. Hence, these qualities make a virus to be considered as a living organism.
Answer:
Viruses have a simple cellular structure
Explanation:
Viruses have a simple structure consisting of a nucleic acid molecule surrounded by a protective protein shell. The nucleic acid is either RNA or DNA. Viruses are capable of replicating inside the host cell by diverting the activities of the host cell, directing it to manufacture new viral particles. The cell of the host then ruptures and releases the viral particles which can infect other cells.
are minerals renewable resources or nonrenewable resources? why
Answer:
Minerals are non-renewable resource.
Explanation:
As Non-Renewable resources are those resources that cannot renew themselves. In other words, get depleted with use as the supply is limited. Minerals take years to form and once used cannot be got back in a short period.
Answer:
False minerals are not renewable
Explanation:
Minerals take time to form so when we use what one's are there they are gone.
Scientific investigations often lead to the formulation of new scientific questions. The observations Charles Darwin's work after
he returned home from his voyage prompted him to ask which question?
-Do living things change over time, and if so, how?
-Are the Galapagos finches and those on the mainland the same species?
-Are pigeons related to the Galapagos finches?
-can selective breeding in nature lead to a new species over time?
*the answer isn’t A**
-Are the Galapagos finches and those on the mainland the same species?
Explanation:
When Darwin visited the Galapagos islands he observed that the small flocks of finches that existed there were very similar to the finches that existed in the mainland of South America except for their beak shape and feeding habits.This prompted him to ask the question that 'Are the Galapagos finches and mainland finches the same species?'Later on studies made it evident that a few groups of mainland finches migrated to the Galapagos island and occupied different niches.They adjusted themselves to the island environment and evolved with new adaptations in beak structure and feeding habits.They are now classified into 14 groups out of which 13 exist in the Galapagos island.The Galapagos finches are divided into three groups: the ground finches, tree finches and Warbler finches.Answer: Can selection in nature also lead to a new species over time.
Explanation: just did the quiz and got it right.
Describe all muscle tissues, including cell shape, layers, intercellular connections,
locations, and functions of each type.
Explanation:
There are three types of muscle tissue are cardiac, smooth, and skeletal.
1. Cardiac muscle tissue: It is located in the walls of the heart.
They appear striated.
Control is involuntary.
Function: To pump blood through the blood vessels in your body.
2. Smooth muscle tissue: It is located in walls of hollow visceral organs, except the heart.
They appear spindle-shaped.
Control is involuntary.
Function: To move food through the digestive tract.
To regulates air flow in lungs.
3. Skeletal muscle tissue: It occur in muscles which are attached to the skeleton.
They appear striated.
Control is voluntary.
Function: To support the body.
It makes bones and other body parts move.
Cell shape : There are different shapes of cells which are as follows:
1. Squamous 2.Cuboidal 3. Columnar 4. Polygonal 5. Stellate
6. Spheroid 7. Discoid 8. Fusiform 9. Fibrous.
Muscular layer: The muscular layer is present in many organs in the vertebrate body.
It is responsible for peristaltic movement in body.
There are two layers of muscle.
1. Inner 2. Outer layer.
Inner layer: The muscle of the inner layer is arranged in circular rings around the tract.
Outer layer: the muscle of the outer layer is arranged longitudinally.
Intercellular connections or junctions: These are the structures which provide adhesion and communication between cells.
There are mainly three types of junctions:
1. Tight junctions: It help to stop substances from leaking across a tissue.
2. Adhering junctions: It perform the function of cementing so as to keep neighbouring cells together.
3. Gap junctions: It facilitate the cells to communicate with each other by connecting the cytoplasm of adjoining cells, for rapid transfer of ions, small molecules and sometimes big molecules.
This is the result of nondisjunction of chromosomes during meiosis. This mutation results in three copies, instead of the normal two . If can happen with sex or autosomal chromosomes.
Answer:
The result of non-disjunction of chromosomes during meiosis, producing three copies of the chromosome in the embryos -instead of two- is called trisomy.
Explanation:
With reference to genetics, a cell is diploid because it has an even number of chromosomes, distributed in pairs - each of which is contributed by a parent - and responds to the formula 2n.
In trisomy, non-disjunction during meiosis of the homologous chromosomes causes an overloadin the corresponding gamete, which during fertilization will originate an embryo whose formula is 2n+1.
Trisomias are considered mutations, which can physically and functionally affect an individual, or even make an embryo not viable. This defect can occur in both autosomes and sex chromosomes.
A very common example of this mutation corresponds to the trisomy of chromosm 21, known as Down syndrome.
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Answer:
the correct answer is trisomy
Explanation:
i got it right on usatestprep
A cell goes through cellular respiration and produces ATP which it then uses to move a molecule across the cell membrane. How does the energy in the original glucose molecule change during this process?
The stored energy in the glucose is used to produce ATP that can be converted to mechanical energy when the molecule moves across the cell membrane.
The energy in the glucose is stored as kinetic energy in the ATP and released as potential energy when the molecule moves across the cell membrane.
The energy in the glucose is stored as mechanical energy in the ATP and released as potential energy when the molecule moves across the cell membrane.
The kinetic energy in the glucose is stored as potential energy in the ATP and released as kinetic energy when the molecule moves across the cell membrane
The correct answer is : The kinetic energy in the glucose is stored as potential energy in the ATP and released as kinetic energy when the molecule moves across the cell membrane.
Explanation:
Adenosine triphosphate (ATP) is produced by converting the biochemical energy from nutrients during cellular respiration in the cells of organisms. The energy gained from ATP can be widely used for different cellular activities. Several metabolic reactions take place to change the energy from glucose to ATP.
During the movement of molecule across the cell membrane, the kinetic energy in the glucose is stored as potential energy in the ATP and released as kinetic energy.
Answer:
d
Explanation:
Bella investigated how body systems work together. She made bulleted lists of body systems that have common functions. Which list includes three body systems that have similar functions?
A. -Digestive System
-Nervous System
-Skeletal System
B. -Immune System
-Integumentary System
-Lymphatic System
C. -Cardiovascular System
-Digestive System
-Respiratory System
D. -Reproductive System
-Endocrine System
-Lymphatic System
The list with similar functioning body systems is B: Immune System, Integumentary System, and Lymphatic System. These systems work together to protect the body from external harm, eliminate waste and fight infections.
Explanation:The list that includes three body systems that have similar functions is B: The Immune System, the Integumentary System, and the Lymphatic System.
The Immune System defends the body against pathogens, the Integumentary System (skin, hair, nails) protects the body from damage (such as loss of water or external harm), and the Lymphatic System helps rid the body of toxins, waste and other unwanted materials.
These systems work together to protect the body from external harm, to eliminate waste and to fight infections.
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The correct answer is C. -Cardiovascular System, -Digestive System, -Respiratory System.
These three body systems work together to provide the body with the necessary nutrients and oxygen, as well as to remove waste products. Here's how they function in a coordinated manner:
- The Digestive System breaks down food into nutrients that the body can absorb. It processes the food we eat into energy and basic nutrients, which are then absorbed into the bloodstream.
- The Cardiovascular System transports the nutrients absorbed by the digestive system to all the cells in the body. It also carries oxygen from the lungs to the cells and removes carbon dioxide and other waste products from the cells to be expelled from the body.
- The Respiratory System works closely with the cardiovascular system to oxygenate the blood. It brings oxygen into the body and removes carbon dioxide when we exhale. The oxygen is then picked up by the red blood cells and transported by the cardiovascular system to the tissues.
Together, these systems ensure that the body's cells receive the oxygen and nutrients they need to function and that waste products are removed efficiently. The other options listed do not represent systems with as closely related functions as the cardiovascular, digestive, and respiratory systems.
The energy of motion is called _____. kinetic energy potential energy weight mass need this in 2 days HELP MEH
Answer:
Kinetic Energy
Explanation:
Kinetic Energy is energy caused by motion. For instance, temperature is simply a measure of kinetic energy, or the movement of particles.
Answer:
Um Kinetic energy (hope it helps you)
Explanation:
Kinetic Energy is energy caused by motion.
what happens during anaphase
Answer:
each pair of chromosomes is separated into two identical, independent chromosomes by a structure called the mitotic spindle. The separated chromosomes are then pulled by the spindle to opposite poles of the cell.
Explanation:
Answer:
During anaphase, the chromosomes are separated into two groups that are genetically identical, and are move to the opposite pole of the cell by the spindle.
Explanation: During cell division, different changes are observed in the cell. In prophase, the chromosomes condense in the nucleus and become visible while the spindle begins to form in the cytoplasm. In metaphase, the chromosomes are arranged in the middle of the cell by the spindle. In anaphase, the spindle separate the chromosomes into two genetically identical groups and move them to opposite ends of the spindle poles. In telophase, there is formation of nuclear membrane around the two identical sets of chromosomes, spreading out of the chromosomes and breaking down of the spindle.
Suppose the two possible alleles for the height gene are tall and short. If short is recessive to tall, provide the symbol representation and the phenotype for each of the genotype for this trait.
The allele for short is tt
The phenotype is short and genotype is tt
Explanation:
In Mendelian Genetics, Tall is dominant so written in upper case so the allele will be TT, while the short will have recessive trait allele will be tt.
TT ( dominant tall)
tt (recessive short)
short progeny will always have tt alleles and the phenotypic trait of shortness will appear only when the carrier is homozygous tt.
the three possible alleles for both short and tall feature are:
TT, Tt, tt
The genotype is tt and phenotype is short height. One heterozygous possibility is Tt but T being dominant so 't'will not be expressed.
how does sleeping pills react or are bad to the body
Hi there.
Sleeping pills can be affective, one common side-affects are; "slower breathing" -- slower breathing is a common factor, as a side affect. Another would be "depressed breathing".
These happen for many reasons, forcing your body to sleep isn't on the "healthy" side of your body.
Sometimes, people do get addicted to sleeping pills; and take them every night and can lead to small or major health issues.
An unwanted pill that goes into your body every night will cause unwanted side affects. That can be very harmful!
What is the maximum number of atoms that a carbon atom can bond with in a organic compound
Answer:
4
Explanation:
carbon atoms only have four valence electrons so they can only bond with 4 other atoms
Answer: Four (4)
Explanation: Carbon has a total of six electrons in its shell but has four (4) electrons in its outermost shell. Electrons found in the outermost shell are called valence electrons. This means that carbon needs four (4) electrons to complete its octet structure that is carbon needs four electrons to attain a stable octet structure of noble gases.
Which three types of pathogens cause disease by trying to get nutrients from your body?
A. Virus
B. Bacterium
c. Fungus
D. Parasite
Final answer:
Viruses, bacteria, and fungi are three types of pathogens that cause disease by trying to get nutrients from your body.
Explanation:
The three types of pathogens that cause disease by trying to get nutrients from your body are virus, bacterium, and fungus. These pathogens invade your body and replicate inside your cells, using your body's resources to sustain themselves. For example, viruses like the flu virus invade your cells and hijack their machinery to replicate and spread throughout your body. Bacteria like Staphylococcus aureus release toxins that damage your tissues and allow them to feed on the resulting nutrients. Fungi like Candida albicans can produce enzymes that break down your tissues and use the breakdown products as a nutrient source.
What are monozygous twins? How are monozygous twins represented on a pedigree chart
Answer:
Monozygous twins can be described as the twins which arise from the same egg. A single egg divides into two zygotes to form the monozygotic twins. Such kind of twins are are also known as identical twins.
In a pedigree chart, the monozygotic twins are represented by a a horizontal line connecting the two diagonal lines that lead down to the gender symbols. A horizontal line between the children hence depicts that they are identical twins.
4. What substance is oxidized during cellular respiration?
ojo
O
A glucose
B oxygen
OC carbon dioxide
D water
Answer:
B
Explanation:
Oxygen
Answer:
What substance is oxidized during cellular respiration?
Carbon is oxidized from the breakdown of glucose while the oxygen is reduced
Explanation:
The image shows a rain forest ecosystem. The energy from plants, or producers, acts as the starting point of energy in the ecosystem. This energy is transferred to other organisms in the food web. In which two ways is the total amount of energy conserved in the ecosystem?
Some energy is transferred to the organisms, and the remaining energy is released into the ecosystem as thermal energy.
Bacteria eat the dead bodies of organisms to release the organisms’ stored energy into the atmosphere.
Some energy is transferred to the smaller organisms, and the rest is stored in the bodies of larger animals.
Some energy is transferred to the organisms, and the rest is released by plants in the form of carbon dioxide.
Bacteria eat the dead bodies of organisms, obtain all the energy, and store it in their bodies.
more than one question
Answer:
The correct answer is A)
Some energy is transferred to the organisms, and the remaining energy is released into the ecosystem as thermal energy.
Explanation:
As we move up the trophic levels in an ecosystem, we observe that the amount of energy keeps on reducing at each trophic level. This phenomenon occurs because not all energy is transferred from one trophic level to another is an ecosystem. Most of the energy is released as heat into the atmosphere. Almost, 10% of the energy is known to flow from one trophic level to another in an ecosystem.
Answer:
a and c
Explanation:
A model of segregation of alleles during meiosis is shown here. A student hypothesizes that failure for chromosomes to segregate
during meiosis might impact the phenotype of the resulting offspring, if those gametes are fertilized. What question is most relevant
for the student to ask about the outcome of a lack of segregation of chromosomes?
Answer:
Explanation:
If a gamete forms without segregation of chromosomes, will a triploid offspring survive?
Meiosis is the reductional division process that reduces the chromosome number. Will a triploid progeny survive is the question that should be asked.
What is segregation in meiosis?Segregation is the process of the separation of the paired homologous chromosomes for the formation of the two sister chromatids during the meiosis process of cell division.
If the process of segregation is absent then the cell will remain diploid and in the process of reproduction will fuse with another haploid cell to form a triploid gamete cell.
Therefore, the question should be about the survival of triploid organisms.
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Early-onset Alzheimer’s disease affects people under the age of 65. Less than five percent of people who are diagnosed with Alzheimer’s disease have this type. Many cases of early-onset Alzheimer’s disease are inherited, a type known as familial Alzheimer’s disease (FAD). Which statement is best supported by this information?
Answer:
With respect to the cases of early-onset Alzheimer’s disease are inherited, a type known as familiar Alzheimer’s disease (FAD), the statement is best supported by this information is that FAD is the result of a genetic change in one or more chromosomes.
Explanation:
Options for this question:
FAD is the result of a genetic change in one or more chromosomes.Natural selection will continue to reduce the incidence of FAD.FAD affects only the genes of middle-aged people.Deletion of one amino acid causes FAD.Alzhaimer's disease is a type of dementia that is characterized by neuronal degeneration, causing disorientation, memory and manual skills loss , among others. The familiar variety (FAD) is hereditary and is associated as a cause of disease and early Alzhaimer, before 60-65 years.
So far, three types of mutated genes related to FAD have been established:
PSEN₁ or presenilin-1 gene , more frecuent.APP or amyloid precursor protein gene. PSEN₂ or gene for presenilin-2, very rare or uncommon.In some cases, people affected by FAD have alteration in more than one gene at the same time.
For this reason, it can be stated that FAD is the result of a genetic change in one or more genes or chromosomes.
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