two dwarfs with achondroplasia decide to have children. What is the likelihood that their 1st living child will be normal height?
I think it would be 1/3 because
D| DD Dd
d| Dd dd
if their genotypes are (dd) then it would be lethal so I didnt include them
Achondroplasia is an autosomal dominant disorder. The lethal genotype is DD, and dd is a normal genotype. So, if we do not include DD genotype, then the likelihood that their 1st living child will be normal height is really 1/3.
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