Question

Sexual reproduction promotes genetic variation. One way variation occurs is via the production of gametes during meiosis. Sexual organisms are the product of sperm and egg, receiving chromosomes from both parents. But what mechanisms are at work during meiosis to promote genetic variation? Review the prompt and select all that apply.

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Answer 1

Answer:

Independent Assortment of chromosomes and crossing over are the the phenomenon which promote genetic variation.

Explanation:

During the metaphase stage of meiosis, the chromosomes align at the centre and there are equal chances of either the mother's or father's chromosome being passed to the daughter cell. The greater the number of chromosomes in a karyotype, the greater the chances are for diversification of gametes.

Crossing over occurs between the homologous chromosomes during meiosis which allows exchange of DNA segments between sister chromatids. This leads to variation.

Answer 2

Answer: A, D,E

Explanation: A, D, E Crossing over - homologous chromosomes pair up with their non-identical twins and exchange regions of DNA. Random segregation - The distribution of chromosomes among four gametes. Independent assortment - The homologous chromosomes of a pair must go into separate gametes.