Galactosemia is a condition that affects how the body digests the sugar galactose. The most common form of galactosemia, type I, is the most severe, and it results from mutations within the GALT gene, which encodes for an enzyme that processes galactose. Galactosemia is inherited in an autosomal recessive pattern. Wild-type GALT is designated as G and the recessive allele is designated as g. Based on the give pedigee, What is the probability that Mary and Justin will have an affected child? http://imgur.com/i4fTWfN My solution: Mary has 2/3 change of being heretozygous
Justin's dad has 2/3 chance of being Gg so Justin has (2/3 * 3/4) =1/2 chance of being Gg
then their kid has 1/4 chance of having gg 2/3 x 1/2 x 1/4 = 1/12 but it is wrong! Please help, I don't know why my solution is wrong Thanks in advance
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