If a woman carries an Xlinked recessive lethal mutation what

If a woman carries an X-linked recessive lethal mutation, what proportion of her offspring will be males (what percent of the survivors) if she mates with a normal male?

Solution

Let the allele in question be \"A\" and \"a\".

Woman\'s genotype - XAXa

Man\'s genotype - XAY

So 1/3 proportion of her offspring will be males. That is 33% of the offspring will be males.

XA Xa
XA XAXA XAXa
Y XAY (survivor male) XaY (dead male)
If a woman carries an X-linked recessive lethal mutation, what proportion of her offspring will be males (what percent of the survivors) if she mates with a nor

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