Question

Why does the frequency of children born with Down’s syndrome increase with the age of the mother? Why does it not increase similarly with the age of the father? A. eggs are set aside before birth and therefore have aged; sperm are made continuously B. the gene conferring Down's syndrome is located on the X chromosome C. the gene conferring Down's syndrome is located on the Y chromosome.

Answer 1

Answer:

A

Explanation:

Eggs are set aside before birth and therefore have aged; sperm are made continuously