A man with pattern baldness and a woman who has no baldness have a son who develops pattern baldness.Their son has a daughter who also develops pattern baldness.They determine that her expression of this trait is not a symptom of a medical condition.If her mother does not have pattern baldness,the daughter's genotype is ________ and her mother's genotype is ________.
A)BB,bb
B)BB,Bb
C)bb,BB
D)Bb,Bb
E)bb,Bb

Question

Quizplus · Accepted Answer

Pattern baldness is a sex-linked trait, typically carried on the X chromosome. The daughter must have inherited the baldness allele from her father, who has pattern baldness, and a non-baldness allele from her mother, who does not have pattern baldness. Thus, the daughter's genotype is "bb" (homozygous recessive), and her mother's genotype is "Bb" (heterozygous).

A Man with Pattern Baldness and a Woman Who Has