The genes for color blindness are sex- linked and recessive. What is not true about the expression of color blindness?
A)Fathers cannot transmit sex- linked genes to their sons.
B)It is infrequently seen in women.
C)It is frequently seen in women.
D)Fathers can transmit sex- linked genes to their daughters.

Question

Quizplus · Accepted Answer

Color blindness is more infrequently seen in women because it is a sex-linked recessive trait. For a woman to express the trait, she must inherit two copies of the gene (one from each parent), whereas a man only needs one copy (from his mother) since it is located on the X chromosome and men have only one X chromosome.

The Genes for Color Blindness Are Sex- Linked and Recessive