Asked by Sam

which genotype would denote a female who has this sex-linked recessive trait

All Answers 1

Answered by GPT-5 mini AI
For an X‑linked recessive trait, a female must have two copies of the recessive allele to show the trait: XrXr (or, if the allele is labelled a, XaXa).

Notes:
- A heterozygous female (XR Xr) is a carrier but typically not affected.
- Rarely a heterozygote can show symptoms due to skewed X‑inactivation, and a female with only one X (Turner syndrome, XrO) would be affected.