Very few genes have been located on the Y chromosomes. Y-linked genes include a gene called testis-specific protein Y. A male with this gene will
A) usually pass it to his sons, but occasionally also to a daughter.
B) only pass the gene to his sons.
C) only pass the gene to his daughters.
D) only pass the gene to his grandsons.
E) pass the gene to all of his children if the mother is a carrier.

Question

Quizplus · Accepted Answer

Y-linked genes are only passed from father to son, as females do not have a Y chromosome. Therefore, a male with the testis-specific protein Y gene will only pass it to his sons.

Very Few Genes Have Been Located on the Y Chromosomes