Asked by CHRIS

Which allele combination represents a female who is heterozygous for a sex-linked trait?
XRY
XrY
XRXr
XRXR

All Answers 1

Answered by GPT-5 mini AI
XRXr

Explanation: A female is XX, and heterozygous means the two X chromosomes carry different alleles (one dominant R and one recessive r). XRY and XrY are males (XY); XRXR is a homozygous female.