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Vikki [24]
2 years ago
11

Crossing over contributes to genetic variation by exchanging chromosomal segments between:_____.

Biology
1 answer:
yulyashka [42]2 years ago
3 0

Crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of homologous chromosomes.

What is crossing over?

  • Crossing over is the exchange and recombination of genetic components between the homologous chromosomes.
  • This occurs in the pachytene stage of the meiosis-1 of the meiotic division.
  • Crossing over occurs with the help of an enzyme and the enzyme responsible for crossing over is called Recombinase.

Thus, crossing over contributes to genetic variation by exchanging chromosomal segments between non-sister chromatids of the homologous chromosomes.

Learn more about crossing over: brainly.com/question/927405

#SPJ4

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A mitochondrion has just been engulfed by a cup-shaped isolation membrane as it undergoes mitophagy. Before lysosomal fusion, ho
harkovskaia [24]

Answer:

Option-C

Explanation:

Mitophagy refers to the process which is evolutionarily conserved in the organisms to remove the dysfunctional mitochondria in the cell.

The mitochondrial is degraded by the digestive organelles by engulfing the mitochondria.

The mitochondria are engulfed by the lysosome and then phagosome is formed which is double membrane structure. This phagosome matures into the autophagosome and now has the mitochondria engulfed.

Since the mitochondria contain toe layer and during mitophagy engulfed by the phagosome, therefore, there is a total of four-layer.These four layers separate the matric of the mitochondria with the cytosol.

Thus, Option-C is the correct answer.

4 0
3 years ago
Which of the following will occasionally produce a duplicate gene?
In-s [12.5K]
<span>Homologous chromosomes exchange DNA during meiosis in a process called crossing-over. Crossing-over sometimes involves an unequal swapping of DNA. Basically one chromosome in the pair gets extra DNA.</span>
4 0
3 years ago
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A population of 500 rabbits lives in an area that is 25 square miles. What is
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Answer:

20 rabbits/square mile

Explanation:

No. of rabbits = 500

Area = 25 square miles

Density = 500/25

= 20 rabbits/square mile

7 0
2 years ago
PLEASE HELP!!!
sineoko [7]
I believe it is D as it is a better answer than D because of the fact that the statement does not explein the age of her grandmother "old" is just drawing a conclusion off nothing, and it does not say that she does not like her at all , thus it is an incorrect statement . So the answer is D.
4 0
3 years ago
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Answer:

Conduction

Explanation:

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Subduction- that has to do with the Earth's plates moving

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5 0
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