Answer:
(Choice B) 5 homologous pairs of chromosomes comprising a total of 20 chromatids.
Explanation:
Homologous chromosome are those two chromosomes which have same gene but different in shape and appearance.
Chromatids are the identical copies of chromosome. Single chromosome splits into double number of chromatids. In 5 pairs, 10 chromosomes are present so 10 chromosomes splits into 20 chromatids.
The beginning of meiosis I in female swamp wallabies contains 5 homologous pairs of chromosomes, totaling 20 chromatids.
The correct answer is:
(Choice B) B. 5 homologous pairs of chromosomes comprising a total of 20 chromatids.
In female swamp wallabies, which have a diploid chromosome number of 10 (10 pairs of chromosomes), at the beginning of meiosis I, the germ cells contain homologous pairs of chromosomes. Meiosis I is the first stage of meiosis, where homologous chromosomes pair up and undergo crossing over, resulting in genetic recombination.
Since the swamp wallabies have 10 pairs of chromosomes, this means they have 5 homologous pairs. Each homologous pair consists of two chromosomes (paternal and maternal), and during meiosis I, these homologous pairs align and exchange genetic material. Therefore, each chromosome consists of two chromatids due to DNA replication during interphase before meiosis I begins.
So, at the beginning of meiosis I, a female wallaby germ cell contains 5 homologous pairs of chromosomes, comprising a total of 20 chromatids (2 chromatids per chromosome × 10 chromosomes). This configuration allows for genetic variation and the production of genetically diverse ova, essential for reproductive success and species survival.
If 48 g of magnesium reacts with oxygen gas, how many grams of magnesium oxide will be
formed according to the following equation?
2 Mg + O2 → 2 Mgo
To find the mass of magnesium oxide produced, we calculate the moles of magnesium reacted, then use stoichiometry based on the balanced chemical equation to find the moles and mass of magnesium oxide formed. Approximately 79.61 g of magnesium oxide will be produced when 48 g of magnesium reacts with oxygen.
Explanation:To calculate the mass of magnesium oxide (MgO) formed from the reaction of magnesium (Mg) with oxygen (O2), we need to use the balanced chemical equation and stoichiometry. The chemical equation for the reaction is: 2 Mg + O2 → 2 MgO.
First, we find the number of moles of Mg using its molar mass (24.305 g/mol). Since we have 48 g of Mg, this is:
48 g Mg × (1 mol Mg / 24.305 g Mg) = 1.976 moles of Mg.
According to the balanced equation, 2 moles of Mg react with 1 mole of O2 to produce 2 moles of MgO. Therefore, the amount of MgO produced will also be 1.976 moles since Mg is the limiting reactant.
The molar mass of MgO is approximately 40.30 g/mol. So the mass of MgO produced is:
1.976 moles MgO × 40.30 g/mol = 79.61 g MgO.
Which is the fifth most common pool where carbon is stored apart from the Earth’s crust, ocean, soils, and atmosphere? The five most prominent pools where carbon is stored include the Earth’s crust, oceans, soil, atmosphere, and the .
Answer:
Explanation:
We can organize all the carbon on earth into five main pools, listed in order of the size of the pool:
Lithosphere (Earth's crust). This consists of fossil fuels and sedimentary rock deposits, such as limestone, dolomite, and chalk. ...
Oceans. ...
Soil organic matter. ...
Atmosphere. ...
Biosphere.
The fifth most common pool where carbon is stored apart from the earth's crust, ocean, soils, and atmosphere is the living biosphere especially the plants.
where is carbon stored in environment ?Most essential element to all living things on earth is carbon which are present every where like in plants and animals, surface and marine.
It regulate global climate including temperature and determine the features of rain water.
The main source of storage of carbon are atmosphere where carbon dioxide and shorter-lived methane CH4 are stored.
In biosphere carbon is present in all living organisms in various forms where as in cryosphere the plants of tundra and arctic regions have the carbon storage.
Pedosphere store organic carbon and the remaining of dead plants & animals where as lithosphere have many of the rocks of the earth’s crust which contain carbon.
Finally hydrosphere have the oceans contain that have dissolved CO2 as well as marine.
Learn more about Carbon storage, here:
https://brainly.com/question/15319612?
#SPJ2
( Extremely Need Help ASAP). Will Mark Brainliest to whoever can be honest with there response). You will do research to learn more about the seismic waves play in earthquakes and tsunamis. Address one of the following questions: • How does an underwater earthquake cause a tsunami? • Why do some earthquakes cause more damage than others? Here's a website and some keyword search terms to help you get started ( USGS EARTHQUAKES) Keywords search terms: earthquakeformation, P wave, S wave, tsunami, earthquake travel, analyzing earthquakes. Should do the following things: 1) discuss how different types of waves are formed and describe how the waves travel. 2) explain how scientists use waves to track and analyze earthquakes. 3) cover recent events involving earthquakes and / or tsunamis that illustrate the points made in your explanation. ( Will Mark Brainliest to whoever can be honest with there response).
The energy found in nutrients originates from the
Answer:
The energy found in nutrients originates from the Sun
Which statement correctly explains how recombination increases genetic variation
Answer: Local recombination rate is expected to affect baseline diversity (grey dotted line). ... This mixing is called recombination, and it results from crossover events, where pairs of chromosomes swap genetic material. Evolutionary biologists have long known that recombination seems to increase genetic diversity.
Explanation: Natural selection attributes to increased genetic variation.
2 Points
Problems with which part of the bone would lead to blood disorders?
A. Compact tissue
B. Spongy tissue
C. Fossae tissue
O
O
D. Bone marrow
SUBMIT
I’m pretty sure it’s D. Blood marrow
Hope that I helped
Answer: d
Explanation:
Describe one niche in the ecosystem.
Answer:
Niche can be described as the role or position that a particular organism has in its ecosystem.
For example, honeybees which will gather nectar from flowers to make honey is an example of a niche. The particular role of honeybees in an ecosystem is to collect nectar in that ecosystem from different flowers and to produce honey. Other organisms living in the same environment will not perform the same function in the ecosystem.
Which answer identifies the accurate food chain for a snake, grasshopper, frog, and grass?
frog → grasshopper → grass → snake
grasshopper → snake → frog → grass
snake → frog → grasshopper → grass
grass → grasshopper → frog → snake
grass, grasshopper, frog, snake
♡ The Question ♡
-Which answer identifies the accurate food chain for a snake, grasshopper, frog, and grass?
* ୨୧ ┈┈┈┈┈ ┈┈┈┈┈┈┈ ୨୧*
♡ The Answer ♡
-Grass → Grasshopper → Frog → Snake!
*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*
♡ The Explanation/Step-By-Step ♡
-No Explanation/Step-By-Step provided!
*୨୧ ┈┈┈┈┈┈┈┈┈┈┈┈ ୨୧*
♡ Tips ♡
-No tips provided!
Do organisms use mitosis, interphase, meiosis, or the G1 phase to grow?
Answer:
mitosis produces more cells and the G1 phase is often referred to as the growth phase, because this is the time in which a cell grows
Explanation:
What determines the function of a protein apex?
The function of a protein determined by:
The shape determines the working of a protein. A protein's design is determined by its primary structure i.e the amino acid sequence. The amino acid sequence within a protein is decided by the encoding arrangement of nucleotide in the gene (DNA).
The role of a protein is utterly dependent on its three-dimensional architecture (other than when it caters as food). This framework may be disturbed by a number of agents thereby denaturing the protein:
Variations in the pH (between charged amino acids the electrostatic interactions is changed).difference in concentration of salt (does the same).temperature change (higher temperatures decrease the strength of hydrogen bonds).reduction agent presence (disruption of S-S bonds among cysteines).Analyze and evaluate how natural selection produces change in populations as opposed to individuals.
Answer:
Natural selection can be described as a phenomenon in which individuals of a population which are better adapted to survive in an environment are favored by nature as compared to the individuals of the population which lack better characteristics to survive in the environment.
Through natural selection, evolution occurs and the allelic frequency changes over a period of time. The process of evolution as well as change in the allelic frequencies does not occur just by a single individual, rather it is a collective effort which takes a lot of time. Hence, we say that natural selection changes the population and not a single individual.
Earth travels around the Sun at about 67,000 miles per hour. Earth's motion, therefore, is an example of _____.
A. speed only
B. velocity only
C. both speed and velocity
Answer:
B. Velocity
Explanation:
Answer: (B.)
Earth travels around the Sun at about 67,000 miles per hour. Earth's motion, therefore, is an example of ''velocity only''
If the beetles disappeared from this community, which changes would be
likely to occur? Select the three correct answers.
A. A decrease in the number of boa constrictors
B. A decrease in the population of sloths
c. A decrease in the population of poison dart frogs
D. An increase in the number of strangler figs
E. An increase in the population of fruit bats
If the beetles disappeared from this community, it would likely cause a decrease in the population of sloths and poison dart frogs, and an increase in the population of fruit bats.
Explanation:If the beetles disappeared from this community, it would likely cause a decrease in the population of sloths, a decrease in the population of poison dart frogs, and an increase in the population of fruit bats.
The beetles serve as a food source for some sloths and poison dart frogs. Without beetles, these species would struggle to find enough food, leading to a decrease in their populations.
Additionally, fruit bats consume fruits, which are produced by plants. If the number of beetles declines, it may result in an increase in the population of fruit bats because there would be less competition for the available fruits.
Learn more about Interactions in ecosystems here:https://brainly.com/question/30838086
#SPJ12
Which of the following structures are found in plants but not in animals? Select all that apply.
cell wall
chloroplast
ribosome
golgi apparatus
lysosome
Answer:
cell wall
chloroplast
Answer:
cell wall and chloroplast should be correct. hope this helps
Explanation:
After Translation, a polypeptide chain undergoes modifications. Which of the following would NOT
be a post-translational modification?
O A. Addition of Acetate
B. Addition of a Disulfide Bridge
OC. Removal of non-functional Intron
D. Removal of Methionine
Answer:
Answer is B
Explanation:
The correct answer to the question is C. Removal of non-functional Intron, as this is not a post-translational modification but rather an event that occurs during mRNA processing before translation.
After translation, a polypeptide chain undergoes various post-translational modifications (PTMs) to become functionally active. These modifications can include the addition of functional groups like acetate (acetylation) or the formation of disulfide bridges, as well as the cleavage of peptide bonds. For example, insulin undergoes PTMs where disulfide bonds are formed, and it gets cleaved to form the mature hormone.
PTMs can occur on the amino acid side chains or at the protein's C- or N-termini. They can involve the introduction of new functional groups, such as phosphate, acetate, amide groups, or methyl groups. One of the most common PTMs is phosphorylation, particularly on amino acids like serine, threonine, or tyrosine. However, the removal of an intron is not a PTM because introns are non-coding sequences removed during mRNA splicing before translation occurs. Therefore, the correct answer to which would NOT be a post-translational modification is C. Removal of non-functional Intron, as introns are removed during RNA processing and before the translation process initiates.
the allele for yellow peas is dominant to the allele for green peas. how would you represent the alleles of a plant that is heterozygous for seed color?
Answer: The alleles of a plant that is heterozygous for seed color can be represented as Y for dominant allele for yellow seed and y for recessive allele for green seed.
Explanation: A plant that is heterozygous for seed colour has one dominant allele and one recessive allele for seed colour. If Y represents the dominant allele for yellow seed colour and y represents the recessive allele for green seed colour, therefore the plant has a genotype of Yy. A dominant allele is one that has the ability to mask the effect of a recessive allele while a recessive allele is one whose effect is masked by a dominant allele. Dominant alleles are denoted with upper cases while recessive alleles are denoted with lower cases. A plant that is heterozygous for seed colour with genotype Yy will manifest outwardly as Yellow seed colour due to the presence of the dominant allele Y.
Final answer:
A plant that is heterozygous for seed color, with yellow being dominant over green, would be represented with the genotype Yy. This indicates one dominant allele (Y) for yellow peas and one recessive allele (y) for green peas.
Explanation:
To represent the alleles of a plant that is heterozygous for seed color, where the allele for yellow peas is dominant to the allele for green peas, we use two different letters. As per the Mendelian genetics convention, a dominant allele is indicated using an uppercase letter, while a recessive allele is indicated using a lowercase letter. Since yellow is dominant, we can denote the yellow allele as 'Y' and the green allele as 'y'. Therefore, a heterozygous plant for seed color would have the genotype Yy, indicating it carries one allele for yellow peas and one for green peas.
Pea plants that are homozygous for the yellow trait would have a genotype of YY, and those that are homozygous for the green trait would have a genotype of yy. When these homozygous plants are crossed, as seen in the P generation, the offspring produced are the F₁ heterozygotes with genotype Yy and a yellow phenotype. From this heterozygous state, the offspring can be predicted using a Punnett square analysis to show potential genotypes and phenotypes of the F₂ generation.
What do you notice about the temperature at each of the layers boundaries
Answer: The mesosphere starts at 31 miles (50 km) and extends to 53 miles (85 km) high. The top of the mesosphere, called the mesopause, is the coldest part of Earth's atmosphere, with temperatures averaging about minus 130 degrees F (minus 90 C). This layer is hard to study
Explanation: hope this helps please give brainliest!
Which of these could be a good reason to end a dating relationship?A.One partner uses physical violence.B.Both partners accept responsibility for their behavior.C.One partner regularly says nice things about the other partner.D.Both partners engage in sexual abstinence
Answer:
a. one partner uses physical violence
Answer:
a.one partner uses physical violence
Which stage represents the establishment of the pioneer organisms? 1. None 2. Grasses 3. Shrubs 4.Loblolly pine trees 5. Blackjack oak trees. Please help, I suck at science.
Answer:
Which stage represents the establishment of the pioneer organisms?
GRASSES
Explanation:
Grasses which are small plants are pioneer organisms as they grow to reach the climax in an ecosystem
Final answer:
The question seeks to identify which stage involves the establishment of pioneer organisms in ecological succession. Pioneer organisms, such as lichens, are the first to colonize lifeless areas, initiating the process by breaking down rock into soil. None of the options provided, like grasses or trees, represent this initial stage.
Explanation:
The question asks which stage represents the establishment of the pioneer organisms. Pioneer species are the first organisms to colonize an area devoid of life, initiating the ecological succession process. These organisms, such as lichens and certain plants, are capable of living in harsh conditions where other species cannot survive. They play a crucial role in breaking down rock into soil, thus paving the way for subsequent species like grasses, shrubs, and trees to establish.
Given the choices, none directly mention pioneer species like lichens or bacteria that typically represent the earliest stage of ecological succession. However, understanding that the question refers to the very start of the succession process, where life begins from bare rock, none of the options listed like grasses, shrubs, loblolly pine trees, or blackjack oak trees fit the description of pioneer organisms. These species come into play at later stages of succession, following the initial establishment by pioneer species.
2. Based on Figure 22–1, which of the following features evolved first in land plants? (1 point)
•flowers
•water-conducting tissue
•seeds enclosed in fruit
seeds
B. Water-conducting tissues
Drag each tile to the correct location on the table. Match the adaptions to the correct biome.
Answer:
desert: plants have structres that conserve water, and animals have ability to burrow to escapde the heat
taiga: trees have soft green needles or leaves , animals migrate to warmer regions during winter
Explanation:
Desert: plants have structures that conserve water and animals have ability to burrow to escape the heat
Taiga: trees have soft green needles or leaves and animals migrate to warmer regions during winter
Desert and taiga ecosystems exhibit distinct adaptations in their plant and animal life to cope with the unique environmental challenges they face. In the desert, where water is scarce and temperatures can be extreme, plants have evolved structures that effectively conserve water. Many desert plants feature specialized adaptations such as deep root systems, succulent tissues, or modified leaves that reduce water loss through transpiration. Additionally, animals in the desert often possess the ability to burrow into the ground to escape the heat, finding refuge in cooler, subterranean environments during the hottest parts of the day.
Conversely, the taiga, characterized by its cold climate, particularly during winter, showcases adaptations in its plant and animal life that address the challenges of low temperatures. Trees in the taiga, such as conifers, typically have soft, needle-like leaves that reduce surface area and water loss, enabling them to thrive in colder conditions. Animals in the taiga often migrate to warmer regions during winter, seeking more hospitable climates where food is more accessible. Migration allows these animals to avoid the harsh winter conditions and scarcity of resources, ensuring their survival in the challenging taiga environment.
For more questions on Desert
https://brainly.com/question/1193694
#SPJ2
a. Cows that have a spotted coat have a roan coloring. Both (blank)
are expressed. This pattern of
inheritance is a result of (blank)
Answer: Cows that have a spotted coat have a roan coloring. Both genes are expressed. This pattern of inheritance is a result of codominance
Explanation: Every trait is controlled by a gene that occurs in pair. An allele is a different form of a particular gene. Alleles can be dominant or recessive. A dominant gene is one that is able to express itself in the presence of a recessive gene or is able to mask the effect of the other gene. A recessive gene is one whose effect is masked by a dominant gene. When two genes equally express themselves outwardly, they are said to be codominant.
Codominance is a situation whereby neither of the genes is completely dominant rather both express themselves equally phenotypically. In codominance, one gene is not capable of masking the effect of the other.
What would happen if glycolysis stopped happening in a cell
Explanation:
If Glycolysis stopped happening in the cell, the cell would not likely produce ATP molecules and in the same time, the Krebs cycle will not function without it.
Answer:
The Krebs cycle could not function
Explanation:
pls thank me and or rate the answer
Definition: This is a cylindrically shaped attachment on the revolving nose piece of a compound light microscope near the specimen
Answer: The answer is objective lens.
Identify structure A.
Identify structure B.
Identify structure C.
Identify structure D.
Explanation:
A = chloroplast
B = stroma
C = granum
D= thylakoid
Without more context or visual aids, it is not possible to accurately identify the structures A, B, C, and D. They could be parts of a cell or elements of a biological system.
Without visual aides or context, it isn't possible to accurately identify 'Structure A', 'Structure B', 'Structure C', and 'Structure D'. Considering a biological context, we might be referring to various parts of a cell (e.g. the nucleus, mitochondria, ribosomes etc.) or different parts of a biological system (like the circulatory or nervous system). If you have specific structures within a diagram that you're trying to identify, please provide more information if you can, and I'll happily help you understand their functions.
Learn more about Structure Identification here:https://brainly.com/question/32077552
#SPJ2
Which conditions are required for nuclear fusion to begin? The gas cloud must be very dense. Gravitational attraction must stop. Atoms must be stripped of their electrons. Helium atoms must break down into hydrogen. Temperatures must exceed 14 million Kelvin.
Answer:
Explanation:
Fusion requires temperatures about 100 million Kelvin (approximately six times hotter than the sun's core).
At these temperatures, hydrogen is a plasma, not a gas. ...
The sun achieves these temperatures by its large mass and the force of gravity compressing this mass in the core.
Answer:
The gas cloud must be very dense.
Atoms must be stripped of their electrons.
Temperatures must exceed 14 million Kelvin.
Explanation:
I got it right and it says it's not
Gravitational attraction must stop.
Helium atoms must break down into hydrogen.
explain the difference between melting and melting point
Answer:
Explanation:
The melting point is the temperature at which any substance melts i.e changes its state from solid to liquid.
Melting is a phase change from solid to liquid.
Melting point is a temperature value or number. Melting is phase change from solid to liquid. Melting usually occurs when temperature is added to a body. The melting point of all pure samples of a compound is the same as it is an intensive property. Melting is physical change of matter.What are the different structures and functions of roots?
Different structures and functions of roots
Explanation:
Roots are the underground descending non-green part of the plant.
Root functions: Anchorages the plant to the soil, absorbs water and nutrients from the soil.
Characteristics: Positively geotropic and hydrotropic, negatively phototropic; does not have nodes, internodes or stems.
Types:
Tap root Adventitious root – fibrous, foliar and true adventitious rootsStructure and functions:
Root cap or Calyptra: Cap-like structure covering the root tip .Function: protects the meristematic tissues of the root, secretes mucilage which enhances the root tips to grow into the hard soil. Meristematic zone or growing point sub-terminal behind root cap. These cells are inverted and looks like a dome. Function – helps in the root growth by adding new cells to the root tip and other basal regions Zone of elongation behind the meristematic zone. Function – helps in elongation of the root Root hair zone: This is the zone of differentiation where cells differentiate into vascular tissues like phloem, xylem, endodermis, cortex etc. The main function of root hair is to increase the total surface area of root to facilitate more absorption of water and other nutrients from the soil Zone of maturation: the major and mature portion of a root. Function - lateral roots originates from this zone and radial differentiation leads to secondary growth.These stinging cell animalsuse what
to move their armlike parts?
Cnidarians uses arm-like parts called tentacles to sting.
Explanation:
Animals belonging to genus Cnidaria use arm-like structures called tentacles to sting. The cnidarians tentacles are present with specialized stinging cells called cnidocytes.
These cnidocytes are responsible for the stinging action which is done by the cnidocyte organelle called the nematocysts or the stingers.
Nemotocyts contain coiled thread or barb-like or hair-like structures which fires the toxin out while stinging.
The opening or the mouth-like parts on the tentacles contain numerous cnidocytes which releases toxin when the tentacles are touched by another organism or when the cnindarian touches its prey.
Definition of stem cell ?
Answer:
Stem cells are cells of the body (somatic cells) which can divide and become differentiated.
Explanation:
Answer:
an undifferentiated cell that can divide to produce some offspring