Question

Which diagram demonstrates how crossing-over contributes to genetic variety during meiosis?

A) Answer choice A

B) Answer choice B

C) Answer choice C

D) Answer choice D

Answer 1

Crossing over is defined as the exchange of genetic material during the formation of germ cells. The given image out of which crossing over is best described is:

C) Option C- Answer choice C

Crossing over is the process of swapping of genetic material occurring during the formation of reproductive cells. Crossing-over is an essential process that causes unique combinations and variation in the daughter cells. The process occurs between prophase I and metaphase I.

Reasons for incorrect answers:

• A) The given table represents the cross between heterozygous pair of genes.
• B) The image represents the metaphase of cell division, in which chromosomes are aligned at the equator plate.
• D) The given image represents the replication of DNA.

Therefore, the crossing over occurs during meiotic division in which exchange of genetic material takes place.

To know more about crossing over, refer to the following link:

https://brainly.com/question/18824252?referrer=searchResults

Answer 2

Crossing a different strand of chromosomes is called crossing over.

Crossing over helps in the following ways:-

• Increases variation
• Increases natural selection
• Increases the new character in a population

Hence, according to the question in option B the chromosomes are changing the genes.

Therefore, option B is correct.

For more information, refer to the link:-

https://brainly.com/question/2505620