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you are studying a family in which there are members who suffer from hereditary

ID: 90430 • Letter: Y

Question

you are studying a family in which there are members who suffer from hereditary huntingtons disease. after diong some analysis you find that the gene implicated in the disorder is the HD gene and the disease causing the allele is being passed in an autosomal dominant fashion. interestinlgy, an affected male age 43 forms a union with a healthy female age 43 and they have a daughter age 15 who appears unaffected. huntington's disease symptoms usually appear at age 40. name two possible reason why their daughter is unaffected. please use proper terminology and not just describe the content.

Explanation / Answer

The two possible reasons why their daughter is unaffected are: