Question

Ok this is the third time posting.

How does gene duplication allow new genes to develop over many generations? Select two answer choices.

a. If the original gene becomes non-functional because of a mutation, it will be selected against and could be deleted because it accumulates further mutations over time to eventually become a non-functional gene.

b. In organisms with duplicated genes, the original gene and its function is maintained while allowing mutations to occur in the duplicated gene that can lead to new variations.

c. In organisms with duplicated genes, the original gene and its function is deleted while allowing mutations to occur in the duplicated gene that can lead to new variations.

d. If the duplicated gene becomes non-functional because of a mutation, it will not be selected against and could accumulate further mutations over time to eventually become a gene with new functions.

Answer 1

Caution: I am not a 100% sure but would love to help you out as max as I can.

So since you have to choose two answer choices, you have to choose between answers A and D, and B and D.

I believe A is one answer because if a mutation occurs and the gene cannot work anymore, the body will know to delete itself because of how much damage it can cause. Additionally, I know B is the answer because duplicated genes contain many variations, and I believe a mutation would occur to have it occur even more but in the future. Duplications that do not have severe effects can persist over generations, allowing mutations to accumulate.