Question

The Y chromosome is believed to have evolved from the X chromosome by a series of steps, including all of the following EXCEPT: A. suppression of crossing over, keeping the maleness gene associated with other male trait genes. B. mutations at other genes affecting male traits. C. a mutation on a proto-X chromosome causing maleness D. degeneration of other genes due to lack of crossing over. E. Actually, all of these are proposed steps in the evolution of the Y chromosome.

Answer 1

Answer:

E. Actually, all of these are proposed steps in the evolution of the Y chromosome.

Explanation:

https://www.my46.org/intro/x-linked-inheritance