Question

Which scenario would result in a female expressing a recessive X-linked trait?
Responses

She inherits the recessive allele from her mother only
She inherits the recessive allele from her mother only

She inherits the recessive allele from both her mother and father
She inherits the recessive allele from both her mother and father

She inherits the recessive allele from her father only
She inherits the recessive allele from her father only

She inherits the dominant allele from either parent
She inherits the dominant allele from either parent

Answer 1

She inherits the recessive allele from both her mother and father.

Reason: females are XX, so an X‑linked recessive trait is expressed only when both X chromosomes carry the recessive allele (homozygous recessive). If she gets a recessive allele from only one parent she will be a carrier and typically not express the trait (except in rare cases due to skewed X‑inactivation).