During prophase I of meiosis, these pairs form a tetrad in a process called:

Answers

Answer 1
homologous chromosomes form the tetrads

Related Questions

You are a genetic counselor. A couple comes to you for advice. The female is eight weeks pregnant with their first child. Both are Ashkenazi Jews, a segment of the population in which Gaucher disease is relatively common. Gaucher disease is a condition that can range from mild and treatable symptoms to severe, debilitating problems. The disease is an autosomal recessive pattern. Which of the following statements is true?

The child will likely have Gaucher disease if she has inherited recessive alleles from each parent.
The child will likely have Gaucher disease if she has inherited one dominant allele from her father.
The child will only have Gaucher disease if she has inherited both dominant alleles from her parents.
The child will only have Gaucher disease if she has received one recessive allele from her mother.

Answers

A) The child will likely have Gaucher Disease if she inherited RECESSIVE alleles from each parent.

D is ruled out because if the child only received one recessive allele but her other allele is dominant, then the most she could be is a carrier. Dominant over recessive.

C is wrong because the question states that the disease is a recessive pattern, while C is stating that the child would only have it if it inherited dominant alleles.

B is wrong. Like D, it’s dominant over recessive and the most the child could be is a carrier.

Therefore, I believe the answer is A, the first one.

What is CRISPR-Cas-9? a A medical device made of titanium that cuts genes. b A metal tool used for cloning animals. c A gene editing tool used to cut specific genes

Answers

Answer: C. A gene editing tool used to cut specific genes.

Explanation:

CRISPR is simply a family of the sequences in DNA thst are found in certain organisms like bacteria. They are used in the detection and also in destroying DNA.

The CRISPR-Cas9 enables geneticist to

remove or alter parts of the gene. It is a simple, and precise method for manipulating genes.

Answer:

C. A gene editing tool used to cut specific genes.

Explanation:

Hope this helps

which substance is the focal point of climate models such as sea ice, heat and salinity exchange, and phase changes?

A. Methane

B. Carbon dioxide

C. Water

D. Nitrogen gas

Answers

Carbon dioxide should be the answer considering its a huge focal point in our climate today and how it affects it.

Carbon dioxide is the focal point of climate models. The correct option is B.

What are climate models?

Climate models, also widely recognized as general circulation models, employ mathematical equations to describe how matter and energy interact in various areas of the ocean, atmosphere, and land.

Its focal point is carbon dioxide that can correlate with sea ice, heat and salinity exchange, and phase changes.

Thus, the correct option is B.

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Bat wings, a human hand, and a whale flipper are all ________________structures. Explain WHY?


Butterfly wings and bat wings are examples of _______________ structures.

The mouths of horseflies and mosquitoes are examples of _______________ structures.

A _______________ structure is one that does not currently have a function in the organism. Give an example.

Comparing structures of embryos is an example of __________________.

If embryos share a common structure, what does that say about their evolutionary relationship?


How would the protein sequence of two closely related species compared to the protein sequences of two unrelated species? Give an example of each here.

Answers

Answers:

1.

blank: Homologous

why?: They all have similar structures passed on from a common ancestor. Although they all have different functions now, they still all have the same basic pattern of bones.

2.

blank: Analogous

why?: Butterflies and bats are both unrelated organisms but they both have similar structures. However, unlike homologous structures, analogous structures do the same job (help the organism fly) but are structured entirely differently because they evolved in the two species independently and did not share a common ancestor.

3.

blank: Homologous

why?: (see question 1 ^)

4.

blank: Vestigial

example: An example of a vestigial structure is a human's tail bone.

why?: Over time humans evolved and our tail bones shrank as we adapted. While we still have one, it serves no purpose in our lives today.

5.

blank: Embryology

why?: Embryology is the branch of science and medicine that is focused on the development and study of embryos. Scientists in this field study the prenatal development of gametes, fertilization, and development of embryos and fetuses.

6.

answer: They share a common ancestor

why?: Embryos of many different species can show evidence of sharing a common ancestor based on the similarities and structures of them all. Similar structures during development support common ancestry. For example, all vertebrae embryos develop gill slits and tails but not all develop into those structures. Over time as organisms evolved their structures changed with them.

7.

answer: If the protein sequence of two species is closely related the two species are most likely similar, but the protein sequences of two unrelated species are not similar meaning these two species are very different. By comparing the positions of amino acids on protein chains you can determine how similar the species are. The less different the positions are, the more alike and related they are.

why?: For example, humans and chimpanzees only have one position on the amino acid chain where they are different but if you compare humans and moths there are 31 different positions.

I included some extra information in this for you so you hopefully can learn something too! I hope this helps and if you have any questions on what I put or anything else, let me know. :)

The speed of a wave is 40 m/s. If the wavelength is 80 centimeters, what is the frequency of the wave?

Answers

Aaaaadmsjjskskaisisiw

(a) Identify the cellular location where PDC is most active.

Answers

Answer:

The mitochondria

Explanation:

Answer:

Explanation:

The mutation will result in the translation of an inactive/nonfunctional Trp-T enzyme.

• The mutation will result in no translation of the Trp-T enzyme.

• The mutation will result in no/reduced production of I3PA

Plzz help! Look at my previous question.​

Answers

Ok, hang on. I am gonna go look at it...

PLEASE HELP ME, it's URGENT!! TO GET A BRAINLIEST FROM ME, PLEASE EXPLAIN WHY YOU CHOSE THAT OPTION

The breaking down of starch into its component sugars would be an example of
A. Catabolism
B. Cell Division
C. Protein Synthesis

A protein being built from individual amino acids would be an example of
A. Anabolism
B. Catabolism
C. Cell Division

Answers

Answer:

The breaking down of starch into its component sugars would be an example of  

✔ catabolism  

A protein being built from individual amino acids would be an example of  

✔ anabolism  

A molecule of sugar being broken apart to release energy would be an example of  

✔ catabolism

Explanation:

ed2021

The breaking down of starch into its component sugars would be an example of  Catabolism. A protein being built from individual amino acids would be an example of Anabolism.

What is metabolism?

Metabolism refers to the chemical processes that occur within a living organism in order to maintain life. These processes include the conversion of food into energy and the use of that energy to power the organism's growth, reproduction, and other functions.

Metabolism can be further divided into two main categories: catabolism and anabolism.

Catabolism is the process by which the body breaks down molecules to release energy. It includes the breakdown of complex molecules such as carbohydrates, fats, and proteins into simpler molecules that can be used by the body's cells for energy. This process produces waste products such as carbon dioxide and water which are eliminated from the body.

Anabolism is the process by which the body uses energy to build molecules. It includes the synthesis of complex molecules such as proteins, nucleic acids, and polysaccharides from simpler molecules. Anabolic reactions consume energy, rather than release it, and they require precursors and enzymes.

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how would an animals color help it survive? give an example

Answers

Answer:

A lion hides in the tall dunes and yellowish collored grass which makes in invisible to other animals nad helps it get prey and not get attacked by hyenas.

Explanation:

Answer:

An animal's color could help it survive by blending into its surroundings so it is less visible to predators and prey.

Example: A polar bear's fur is white, and all the snow in Antartica is also white. Therfeore, it is hard for predators to find the polar bear and for prey to escape because they don't see the polar bear.

Hope this helps! If it did, please give me brainliest! It would help me a lot! Thanks! :D

The cell is the smallest part of a human that is still
an element
b
living
с
a theory
d
an egg

Answers

Living. Can’t imagine what else there is to say
C living It still thrives In a humans body

for each genotype below indicate whether it is dominant or recessive

Answers

Solving from row to row(left to right then go down one)

1) dominant dominant dominant dominant recessive dominant recessive dominant dominant recessive recessive dominant dominant dominant dominant

PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!! PLSSS HELPPPP I WILLL GIVE YOU BRAINLIEST!!!!!!

Answers

Answer:

c. How do the positions of the Sun and the tilt of Earth cause seasons?

Explanation:

Answer: C would be best answered by using a model

Explanation:

describe the two main phases of the cell cycle​

Answers

Answer: The cell cycle has two major phases: interphase and the mitotic phase (Figure 1). During interphase, the cell grows and DNA is replicated. During the mitotic phase, the replicated DNA and cytoplasmic contents are separated, and the cell divides.

Why does Jupiter not have a very strong pull on
the Earth?

Answers

The gravity on Jupiter is greater than the gravity on Earth because Jupiter is more massive. Although Jupiter is a great deal larger in size, its surface gravity is just 2.4 times that of the surface gravity of Earth. This is because Jupiter is mostly made up of gases

Answer:

it doesn't have a strong pull because

Explanation:

since the sun is much bigger the gravitational pull is keeping Jupiter from pulling earth closer although it is still pulling on the planets around it

How are meiosis and mitosis similar?
O A. They happen at the same time.
B. They both produce new cells.
C. They both produce sex cells.
D. They both produce diploids.

Answers

Answer:

Both creates new cells

Explanation:

Meiosis and mitosis both results in the production of new cells. Therefore, the correct statement is option B.

What is meiosis?

Mitosis and meiosis result in cell division and the production of new cells. In mitosis, two genetically identical daughter cells are formed by a parent cell and are responsible for the asexual reproduction of organisms.

In meiosis, four daughter cells are formed from a single parent cell which is genetically diverse, and each daughter cell receives half the number of chromosomes present in the parent cell. Meiosis is the process by which gametes (sex cells) are produced in organisms, and it is responsible for the sexual reproduction of the organisms.

Therefore, both mitosis and meiosis result in the production of new cells. However, mitosis results in the production of two identical daughter cells, whereas meiosis results in the production of four genetically diverse daughter cells.

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Come up with five ethical guidelines for research. Write statements that reflect your own views of
what is right and wrong. If you really love animals, an example of one guideline might be "No
animals may be used in research of any kind." However, when coming up with these guidelines, be
thoughtful about what they really mean. Think of the information you read about earlier. Try to
phrase your guidelines in a way that would allow research that you think would be beneficial to
still be done. You may find that certain circumstances may cause you to rethink your own ethics!

Answers

Answer:

No

Explanation:

Why do organisms that fertilise internally tend to produce less eggs?

Answers

Answer:

Explanation: Internal fertilization has the advantage of protecting the fertilized egg from dehydration on land. The embryo is isolated within the female, which limits predation on the young. ... Even though fewer offspring are produced through this method, their survival rate is higher than that for external fertilization.

Healthy ecosystems depend on–

Answers

Native plant and animal populating hope this helps sorry if it’s wrongs

Healthy ecosystems depend on a variety of factors working together in balance.

Some key factors include:

1. Biodiversity: Healthy ecosystems have a rich variety of species, including plants, animals, and microorganisms.

2. Nutrient Cycling: Ecosystems rely on the cycling of nutrients, such as carbon, nitrogen, and phosphorus, to support the growth and survival of organisms.

3. Energy Flow: Ecosystems depend on the flow of energy from the sun. Producers, such as plants and algae, convert solar energy into chemical energy through photosynthesis.

4. Interactions and Relationships: Healthy ecosystems are characterized by complex interactions and relationships among organisms.

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At boxing practice, Nathan works with his coach to improve the strength of his punch.
Nathan says that the reason the bag is heavy is so that it can absorb plenty of elastic potential energy. Is he correct?

Answer Choices
A. Yes, he is correct.
B. No, the bag absorbs thermal energy.
C. No, the bag absorbs gravitational potential energy.
D. No, the bag is heavy so that its mass will only accelerate a small amount when he punches it.

Answers

A.Yes, he is correct

Juan picks up a steel utensil and immediately drops it because it's extremely hot. How does the reflex arc work to protect Juan from a worse burn?

Answers

This is coming straight off the top of my head but the nervous system picked up on the heat and sent signals to the brain telling Juan that he is in danger so ultimately dropping the steel utensil would protect him from harming himself anymore

Answer:

in a reflex arc, the (sensory) neuron carries the action potential from the (sense organ to the brain)

How are coffee farms a threat to migrating birds?
I’ll mark as Brainliest!

Answers

birds are as picky as coffee snobs when it comes to the trees they'll migrate to for a summer habitat. Migratory birds prefer foraging in native leguminous tree species over non-native and many other trees used on many coffee farms.

plsss help!!!
Which of the following images show high air pressure? (2 points)
A and B
A and D
B and C
C and D

Answers

the answer is A and D

Answer:

creo que es la c

How are mitchondria and chloroplasts similar to prokaryotes ?
A. They use oxygen to produce ATP during aerobic respiration .
B. They all contain membrane-enclosed organelles .
C. They are similar in size and contain their own DNA .
D. They are autonomous, meaning they can live on their own . ​

Answers

The correct answer is B

1. Which statement regarding these
methods of reproduction is correct?
(1) They are both forms of asexual
reproduction.
(2) They are both forms of sexual
reproduction.
(3) Method A is a form of asexual
reproduction and method B is a form of
sexual reproduction.
(4) Method A is a form of sexual
reproduction and method B is a form of
asexual reproduction.

Answers

Do you have a like text book for this for me to answer?

Help me please!!! Will mark brainstest
Which example best represents an object with balanced forces acting upon it? Answers in the picture​

Answers

Answer:

The answer is B. A book sitting on a high shelf.

Explanation:

Because the book is balanced, and something that is balanced stays balanced until you move it.

What is a polar molecule?

Answers

Answer:

This your answer below the image!!!

Explanation:

biology need help asap

Answers

Answer:

It's deoxyribose or ribose (depending on whether it is DNA or RNA). They are carbohydrates

The structure is called nucleotide

The first planet to be discovered using mathematical prediction was:
Neptune
Uranus
Jupiter
Saturn

Answers

Answer:

Neptune :)

Explanation:

Answer:

A. Neptune

Explanation:

v-FLIPs are viral proteins that were first identified as modulators of apoptosis; they contain two death effector domains, which are also found in some initiator caspases such as procaspase-8. These v-FLIP proteins can be recruited to the DISC through the binding of the death effector domain to similar domains in the adaptor proteins but are otherwise catalytically inactive. What do you think is the effect of v-FLIP expression in the host cell?A. It promotes apoptosis mainly via the extrinsic pathway.B. It inhibits the extrinsic pathway of apoptosis.C. It activates only the mitochondrial pathway of apoptosis.D. It inhibits the intrinsic pathway of apoptosis.E. It enhances the caspase cascades in both the intrinsic and extrinsic pathways.

Answers

Answer:

B. It inhibits the extrinsic pathway of apoptosis

Explanation:

Apoptosis is a cellular pathway that leads to programmed cell death. Viral FLICE-inhibitory proteins (FLIPs) bind to the adaptor proteins and block the interaction between the DISC complex with the caspase-8 protease enzyme, which triggers apoptotic cell death. In consequence, cells become resistant to Fas-mediated apoptosis, a pathway initiated by the FADD protein which is known to recruit caspase-8.

wtfk is pepsin? somebody explain this statement to me please​

Answers

Answer:

So pepsin is basically a gastric juice which is produced in the stomach.

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