Question

which allele combination represents a female who is a carrier for an x-linked recessive disorder?

\\(x^r x^r\\)
\\(x^r x^r\\)
\\(x^r y\\)
\\(x^r y\\)

Explanation:

Identify female sex chromosomes

$$ \text{Female} = XX $$

Define carrier genotype for X-linked recessive disorder

$$ \text{Carrier} = X^R X^r $$

Match with given options

$$ \text{Option 1} = X^R X^r $$

Answer:

• (A) \(X^R X^r\) (Correct answer)
• (B) \(X^r X^r\)
• (C) \(X^R Y\)
• (D) \(X^r Y\)