Explain the relationship between homologous chromosomes and the relationship between sister chromatids. how are these relationships different from one another?

Answers

Answer 1

Homologous chromosomes are similar in size and shape. they have the same genes and originate from different parents. Sister chromatids are found in replicated and contain exact copies of the single double helica; molecule of DNA.

Actually homologous chromosomes can be defined as the chromosomes same in shape and size, and carry the genes of contrasting chaacteristics..Chromatids whic separate in metaphase of cell division are sister chromatids.


Related Questions

Pigeons learn to flap their wings to avoid shock ________ easily than they learn to peck a disk to avoid shock. they learn to flap their wings to obtain food ________ easily than they learn to peck a disk to obtain food.

Answers

Pigeons learn to flap their wings to avoid shock more easily than they learn to peck a disk to avoid shock. they learn to flap their wings to obtain food less easily than they learn to peck a disk to obtain food.

That's what'd I'd assume the answer would be.

Which observation would be the best evidence for a recent founder event or population bottleneck?

Answers

The best evidence of such phenomena could be a population's genetic variation decrease.
When a population bottleneck occur it means that for some reason (i.e. environmental events) the size of a population is largely reduced. This leads to reduction of the genetic variation in that new smaller population. When a bottleneck occur, the founder effect is normally seen, which is that one population is established by a small group of a previously larger population leading once again the genetic variation, now though with a bigger population, to be very reduced.

F the body is hyperventilating, releasing more carbon dioxide from the body than being produced, h+ion concentration will decrease?
a. True
b. False

Answers

The answer is a. True

What is a homogeneous mixture of two or more liquids called when they are normally not mixable and need a third substance to help them mix together?

Colloid
Emulsion
Solution
Compound

Answers

it is emulsion. B is correct

The correct answer is B because an Emulsion is when it is normally not mixable. Hopefully this helps :)

A _______ is a kind of lipid that can store energy for a long period of time. These lipids are made up of long chains of carbon and oxygen atoms bonded to a backbone structure.

Answers

fat

because A fat is a kind of lipid that can store energy for a long period of time. Fats are made up of long chains of carbon and oxygen atoms bonded to a backbone structure. This backbone structure is often glycerol.


Fats are important because they are a major source of energy. Since they contain even more carbon-hydrogen bonds than carbohydrates, fatty tissue has the ability to store energy for extended periods of time.

What is a scientific question?
a question that is asked by scientists only
a question that is based on observations and that is testable
a question that is broad and that reinforces existing knowledge
a question that has a simple answer that doesn’t need to be tested

Answers

a question that is based on observations and that is testable

When there are different amounts of a substance on either side of the cell membrane, (a) _____ gradient results.
A) concentration
B) osmosis
C) diffusion
D) membrane

Answers

Its A! concentration.
Question:

When there are different amounts of a substance on either side of the cell membrane, (a) _____ gradient results

Answer choices:

A). Concentration

B). Osmosis

C). Diffusion

D). Membrane

Answer:

A). Concentration

HOPE THIS HELPS

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What is the significance of the uncoupling proteins in adipose tissue?

Answers

The increased loss of body heat.

Fleas are commonly seen on the bodies of dogs. These fleas attach themselves to the host and draw blood as nourishment. Apart from getting nourishment, fleas also get free shelter and a mode of transport. What kind of an interaction does this exhibit?

Answers

parasitism is the correct answer

Answer:

PARASITISM

Explanation:

Interactions between organisms of same and different species occurs in an ECOSYSTEM. However, this relationship can either be of benefit or loss to the organisms involved. A kind of relationship in which one of the organisms benefits at the detriment of another is called PARASITISM. In a parasitic relationship, the organism that benefits is termed the PARASITE while the deprived organism is termed the HOST.

In this question, the fleas and dog are the involved organisms. The flea attaches to the body of the dog for shelter and sucks its blood for nourishment. The flea benefits from the dog while the dog is deprived of its nutrient. Hence, this kind of relationship can be referred to as PARASITIC RELATIONSHIP where the flea is the parasite and the dog, the host.

A client has a prescription for valproic acid (depakene) 250 mg once daily. to maximize the client's safety, the nurse should plan to schedule the medication at what time?

Answers

To maximize the client’s safety, the nurse should plan to schedule the medication at bed time. They are being administered at bed time in order to prevent any side effects and it is a more scheduled time because of the composition of the drug is suitable to be given during bedtime.

Which type of rock usually underlies a karst landscape?

Answers

The answer you are looking for is limestone :)

The type of rock that underlies a karst landscape is limestone [ option B ] . The water-soluble nature of limestone leads to the formation of caves, underground drainage systems, and sinkholes. This is typical of karst topography.

Where limestone, a sedimentary rock primarily composed of the mineral calcite, is prevalent, karst landscapes develop.

Limestone is water-dissolvable, especially within the sight of marginally acidic water, which prompts the improvement of underground waste frameworks, caverns, and sinkholes run of the mill of karst geography.

This cycle is known as substance enduring, where the calcium carbonate in limestone is broken up by the feeble acidic arrangement framed via carbon dioxide and water.

Complete question :

Which type of rock usually underlies a karst landscape?

a. granite

b. limestone

c . quartz

d. shale'

Together, sewage treatment and drinking water treatment are used to _____.

Answers

Reduce the risk of waterborne disease

The greatest threats to human life during volcanic eruptions do not come from lava but from _______________ and _______________.

Answers

Volcanoes affect people in many ways, some are good, some are not. Some of the bad ways are that houses, buildings, roads, and fields can get covered with ash. As long as you can get the ash off (especially if it is wet), your house may not collapse, but often the people leave because of the ash and are not around to continually clean off their roofs. If the ashfall is really heavy it can make it impossible to breathe.

Lava flows are almost always too slow to run over people, but they can certainly run over houses, roads, and any other structures.

Pyroclastic flows are mixtures of hot gas and ash, and they travel very quickly down the slopes of volcanoes. They are so hot and choking that if you are caught in one it will kill you. They are also so fast (100-200 km/hour) that you cannot out-run them. If a volcano that is known for producing pyroclastic flows is looking like it may erupt soon, the best thing is for you to leave before it does.

Some of the good ways that volcanoes affect people include producing spectacular scenery, and producing very rich soils for farming.

Final answer:

During volcanic eruptions, the greatest threats to human life are from pyroclastic flows and lahars, not lava flows.

Explanation:

The greatest threats to human life during volcanic eruptions do not come from lava but from pyroclastic flows and lahars. Pyroclastic flows consist of a mixture of hot gases, ash, and rocks that can sweep down the sides of a volcano at speeds exceeding 1000 kilometers per hour and temperatures around 1000°C. These flows are incredibly dangerous, often occurring with little warning, and are virtually impossible to outrun. On the other hand, lahars are mudflows composed of melt-water mixing with volcanic debris such as ash, creating a fast-moving slurry that can travel swiftly through river channels and can obliterate anything in its path, including towns and cities situated downstream of a volcano.

The most commonly occurring cancer of the female reproductive tract is _____ cancer.

Answers

Most likely Breast Cancer. But, what are your options?
It may be ovary cancer......

A forest has two groups of plants that appear to be very similar both phenotypically and genotypically. The major difference is that one plant group releases its pollen in February, while the other group releases its pollen in April. Design a plan for collecting the data needed to determine whether the plants are members of one population with great diversity or members of two separate species.

Answers

In order to know whether the plants are members of one population with great diversity or actually members of the same species we can attempt to find out whether they reproduce or not. That's one of the main aspects of two organisms of the same species - fertility.

We could start by setting up some kind of artificial environment where both plants would pollenise at the same time, or we could also collect the pollens from both plants and store it to use them in a different time of the year than that of their production. 

After having the pollens available from both plants we could fertilise a group of both plants with each other's pollens (the actual object of study), and also fertilise a group of both plants with their own pollens (so we can have a control for the quality of the pollens and the plants - in this group it is expected to have offspring, if there isn't we cannot take into account any other results).

After the fertilisation, we should now count the offspring. If there is offspring resulting from the crossed plants, they are probably of the same species. We could also compare these plants with the offspring of the normal crossing to check whether there were major differences (such as health issues, or offspring number) that would lead to conclude that still there wasn't compatibility. 

By creating a hybrid between this two groups, even if they are from the same species, we may have to take also into account that they may have different required conditions than their parent plants.

The study should be repeated a few times or the number of plants involved should be large enough to be statistically relevant.

A fossil of a whole prehistoric insect would most likely be found ____.

A. Encased in amber
B. Frozen in a glacier
C. In a mold in sedimentary rock
D. In a cast found on a rock face

Answers

I think the answer is A

Modification of the cell membrane is a function of the

Answers

dietary lipids. can modify the cell membrane

Which of these is a helpful interaction that harms no animal?
Parasitism
Competition
Mutualism
Predation

Answers

I believe it’s mutualism.
I hope this helps

A helpful interaction that harms no animal is known as Mutualism. Thus, the correct option for this question is C.

What is Species interaction?

Species interaction may be defined as the process through which the population of one species interacts with the population of other species that live in the same locality for the purpose of food, shelter, and space.

Mutualism is a type of positive interaction which results in the benefit of both species which are actively involved in the process. It is also known as +,+ interaction. While parasitism, predation, and competition are the types of negative interaction that at least harm one of the species involved in the process.

Therefore, mutualism is a helpful interaction that harms no animal.  Thus, the correct option for this question is C.

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Carrie has cystic fibrosis which must mean that she has inherited a

Answers

The answer to this question would be: recessive gen from his father and recessive gene from his mother.

Cystic fibrosis is a genetic disorder that resulted from the defect at cystic fibrosis transmembrane conductance regulator (CFTR). CFTR has a role in the production of mucus, sweat or the gastric juice. 
The disease is inherited by recessive autosomal gene, which means the patient should get the defective gene from both parents.

What escape planning factors can facilitate or hinder your escape. (select all that apply)?

Answers

Final answer:

Escape planning factors that can facilitate or hinder your escape include knowing multiple escape routes, clear evacuation routes, and practice and familiarity.

Explanation:

Escape planning factors that can facilitate or hinder your escape include:

Knowing multiple escape routes: Being aware of different exits can help you find the quickest and safest way out of a building.Clear evacuation routes: Ensuring that evacuation routes are free from obstacles and well-marked can make the escape process smoother.Practice and familiarity: Regularly conducting drills and familiarizing yourself with emergency procedures can improve response time during an actual emergency.

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The hormone secreted from alpha cells of the pancreas in response to decreased blood glucose is

Answers

this hormone insulin  secreted from alpha cells of the pancreas in response to decreased blood glucose level

What best describes the role of hemoglobin in red blood cells?

Answers

Final answer:

Hemoglobin is the oxygen-carrying component of red blood cells, vital for transporting oxygen to tissues and carbon dioxide to the lungs, with its iron-containing heme groups lending blood its red color.

Explanation:

The role of hemoglobin in red blood cells is to transport oxygen from the lungs to the body's tissues and to carry carbon dioxide from the tissues back to the lungs to be exhaled. Hemoglobin is a complex protein that contains four iron atoms, each capable of binding to an oxygen molecule. This metalloprotein with its iron-containing heme groups gives blood its characteristic red color when oxygenated. Additionally, variations in hemoglobin structure can lead to different clinical conditions, such as sickle cell anemia, which is caused by an abnormal hemoglobin structure leading to sickling of red blood cells, and thus affecting oxygen transport.

Name the property of cholesterol which allows it to insert itself into cell membranes

Answers

Cholesterols are amphiphatic molecules. This property allow cholesterol to insert themselves into cell membranes by interacting with phospholipids which are also amphiphatic in nature. A molecule is said to be ampiphatic if it has both polar and non polar regions.

Which best describes what is occurring in this population of squirrels? Number of Squirrels Entering and Leaving a Population after 1 Year Cause of change Number of squirrels Died from predation 2 Born 4 Immigration 10 Left to find food 3 Died from disease 8 Left to find a mate 3 Population growth is decreasing. Population growth is increasing. Population growth stays the same. Population reaches carrying capacity.

Answers

A. Population growth is decreasing
-2
+4
-10
-3
-8
-3

So the population decreased by 24 because 3+3+8+10+2=26-2=24.

Hoped I helped!

There are different aspects to population. The option that describes what is occurring in the population of squirrels is that Population growth is decreasing.

When you study the population, you will see that it decreased by 24.

That is; 3+3+8+10+2=26-2=24.

What factors affects squirrel populations?

The Natural populations theory is one that states that an organism must live within some specific limits. Squirrels cannot live in places that  gets too hot or too cold,

Physical factors such as temperature, water availability, mineral nutrients are known to be factors that reduces where these species lives.

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A meningocele is the congenital herniation of the meninges through a defect in the __________.

Answers

Final answer:

A meningocele is a congenital condition in which the meninges herniate through a defect in the vertebral column. It occurs during the early stages of fetal development and can cause a range of symptoms.

Explanation:

A meningocele is a specific type of spinal dysraphism, also known as a neural tube defect, that is characterized by the congenital herniation of the meninges, which are the protective layers of tissue covering the brain and spinal cord. In cases of meningocele, the meninges herniate through a defect in the vertebral column. This congenital condition generally occurs during the early stages of fetal development, specifically during the formation of the neural tube, and can cause a range of symptoms depending upon the size and location of the herniation.

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Final answer:

A meningocele is the congenital herniation of the meninges through a defect in the spinal column. It is a milder form of spina bifida compared to myelomeningocele. Symptoms may be less severe because meningocele does not involve spinal nerves.

Explanation:

A meningocele is the congenital herniation of the meninges through a defect in the spinal column. Specifically, the meninges protrude through the vertebral column, forming a cyst-like sac. This condition is different from the myelomeningocele form of spina bifida, which involves the protrusion of both the meninges and the spinal nerves. Meningocele does not necessarily involve spinal nerves, so symptoms may be less severe.

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What are the three highest (broadest) categories that biologists use to categorize living things?

Answers

i believe the answer is archaea, bacteria, and eukarya.

In zoos, scientists study panda bears and attempt to have them reproduce. They wild hope to someday release the pandas into the wild.


this is an example of ____

Answers

Captive Breeding is the answer

In zoos, scientists study panda bears and attempt to have them reproduce. They will hope to someday release the pandas into the wild. This is an example of Captive breeding.

What is Captive breeding?

Captive breeding is the process of breeding of animals outside of their natural environment in the restricted conditions in farms, zoos or the other closed facilities. The choice of animals that are to be part of a captive breeding population, and mating partners within the population, are controlled by humans.

Captive breeding helps to increase the size of a threatened species population and it provides animals a safe space to breed and also allows young animals to become strong and resilient, before we can release them into the wild.

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The largest single cause of death in young children is:

Answers

Injuries (not intentional ones) in teenagers and children. In infants it's more premature births and genetic conditions and were passed on. As far as I know.

How do mutations create such diferences in ones phenotypes and specific characteristics withought mutations getting out of control?

Answers

There is a change in amino acids sequence causes these mutations, If there is an error in the order of amino acids during the process of multiplication, there is a special enzyme to repair errors 

A species that spends most of its life in freshwater or estuarine environments, but travels to the ocean as adults to reproduce is best described as

Answers

Answer:  "anadromous" .
_________________________________________
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