If a son expresses an X-linked recessive gene, he inherited the trait from ____.
A)his mother
B)his father
C)both parents
D)neither parent
E)his grandmother

Question

If a son expresses an X-linked recessive gene, he inherited the trait from ____. ​
A)his mother
B)his father
C)both parents
D)neither parent
E)his grandmother

Quizplus · Accepted Answer

X-linked recessive traits are carried on the X chromosome, which is inherited from the mother. The father passes on his Y chromosome instead. Therefore, a son can only inherit the trait from his mother, who must be either a carrier or affected by the condition.

If a Son Expresses an X-Linked Recessive Gene, He Inherited