AP BIOLOGY

Detailed explanation-1: -Each child of a parent with HD has a 50 percent chance of inheriting the HD gene. A child who does not inherit the HD gene will not develop the disease, and generally, they cannot pass it on to their children or other future generations.

Detailed explanation-2: -If a parent has the Huntington’s disease gene, there’s a: 1 in 2 (50%) chance of each of their children developing the condition – affected children are also able to pass the gene to any children they have.

Detailed explanation-3: -The diagram at right shows how the Huntington’s allele is passed down. Since it is the dominant allele, individuals with just one parent with Huntingtons’s chorea have a 50-50 chance of developing the disease themselves.

Detailed explanation-4: -Huntington’s disease is autosomal dominant, meaning inheritance of just a single copy of an abnormal chromosome from a biological parent is enough to cause it. If one parent carries the abnormal gene, each of their biological children has a 50 percent chance of Huntington’s disease inheritance.

Detailed explanation-5: -With dominant diseases like Huntington’s Disease (HD), it is usually pretty easy to figure out risks. Generally if one parent has it then each child has a 50% chance of having it too. And if neither parent has the disease, then odds are that none of the kids will either. Huntington’s is a dominant genetic disease.