Sex-linked traits

Question

Sex-linked traits

Quizplus · Accepted Answer

Sex-linked traits are carried on the sex chromosomes, usually the X chromosome. Since females have two X chromosomes, they can carry the trait on one X chromosome without displaying it if the other chromosome has a dominant allele. In this case, males only have one X chromosome, so they will either express or not express the trait based on the allele they receive from their mother. Therefore, sex-linked traits are usually passed from mother to son, not from father to son as stated in option A. Option B is incorrect because females can display sex-linked traits if they have two copies of the recessive allele. Option D is incorrect because there is no specific dominance or recessiveness associated with sex-linked traits.

Sex-Linked Traits