If the inheritance type in the following pedigree is Xlinked

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