Question Detail

BIO 101 Last Min Prep Objective Question

Question

What is the probability that a male child will inherit an X-linked recessive allele from his father?
Options
A 100%
B 0%
Correct Answer
C 25%
D 75%
Correct Answer

Option B is the correct answer.

Detailed Explanation

A father contributes his Y chromosome to a son, not his X chromosome. Therefore, a son cannot inherit any X-linked allele from his father. The chance is 0%.

Hint

Sons get their X from mom, Y from dad.

Question Info