HUNTINGTON’S DISEASE is an autosomal dominantly inherited,degenerative human disease of the nervous system. Individualshomozygous for this dominant gene almost always die as a fetus. Thedisease has no obvious phenotypic effects in a heterozygousindividual, until a person is about 35-40 years old, well intochild-rearing years. There is no known cure for this geneticdisease.
E. Determine the results of a mating between two parents, bothof whom will get Huntington’s disease.
- Provide the Punnett square and the potential offspringphenotypes and genotypes.
- What percentage of children from this mating will developHuntington’s?
- What percentage of children from this mating will carry atleast one Huntington’s allele?
