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If the inheritance type in the following pedigree is X-linked recessive, what is III-1’s genotype?
If the inheritance type in the following pedigree is X-linked recessive, what is III-1's genotype?
hemizygous for dominant allele Definitely heterozygous hemizygous for recessive allele
Definitely homozygous dominant
Solution
Answer; Since III-1 is Hemizygous for dominant allele
Explanation:
Since III-1 is not affected he must be XY (where X carry dominant allele)
II-3 is an affected male XcY
II-4 is a carrier female XcX
= XcXc, XcX, XcY, XY
Since III-1 is not affected he must be XY
Hemizygous for dominant allele

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  • 1. If the inheritance type in the following pedigree is X-linked recessive, what is III-1’s genotype? If the inheritance type in the following pedigree is X-linked recessive, what is III-1's genotype? hemizygous for dominant allele Definitely heterozygous hemizygous for recessive allele Definitely homozygous dominant Solution Answer; Since III-1 is Hemizygous for dominant allele Explanation: Since III-1 is not affected he must be XY (where X carry dominant allele) II-3 is an affected male XcY II-4 is a carrier female XcX = XcXc, XcX, XcY, XY Since III-1 is not affected he must be XY Hemizygous for dominant allele