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Yuliya22 [10]
3 years ago
14

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

Biology
2 answers:
slava [35]3 years ago
4 0

it \: is \: letter \: a
Misha Larkins [42]3 years ago
3 0

The right answer is XrY.

Men, who have only one X chromosome, have the disease if they carry an abnormality on their only copy of the gene. The Y chromosome carries genes different from those carried by the X chromosome.

In genetics the uppercase letters designate a dominant allele and the lowercase letters designates a recessive allele, which lets us say that the answer is XrY.


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