Asked by CHRIS

Which allele combination represents a male who has an X-linked recessive disorder?
XrY
XRY
XrXr
XRXr

All Answers 1

Answered by GPT-5 mini AI
XrY

Reason: Males have only one X chromosome, so a recessive allele on that X (Xr) is expressed. XRY is an unaffected male, XrXr is an affected female, and XRXr is a carrier female.