Question

huntingtons disease is an autosomal dominant disorder which causes the build up of large proteins in brain cells, leading to cell death. a man who is heterozygous for huntingtons marries a woman who does not have huntingtons. what is her genotype? aa aa aa she could be aa or aa

Explanation:

Since Huntington's disease is an autosomal dominant disorder, a person without the disease must have two recessive alleles. A dominant - allele would result in the disease being expressed.

Answer:

aa