AP BIOLOGY

Detailed explanation-1: -Autosomal dominant inheritance: A person affected by an autosomal dominant disorder has a 50 percent chance of passing the altered gene to each child.

Detailed explanation-2: -You need only one altered gene to be affected by this type of disorder. A person with an autosomal dominant disorder-in this case, the father-has a 50% chance of having an affected child with one altered gene. The altered gene is known as the dominant gene.

Detailed explanation-3: -Autosomal Dominant Disorders This means that if the dominant allele is present, then the person will express the disease. A child only has to inherit one dominant allele to have the disease. The disease causes the brain’s cells to break down, leading to muscle spasms and personality changes.

Detailed explanation-4: -More Information. Autosomal dominant inheritance is a way a genetic trait or condition can be passed down from parent to child. One copy of a mutated (changed) gene from one parent can cause the genetic condition. A child who has a parent with the mutated gene has a 50% chance of inheriting that mutated gene.

Detailed explanation-5: -After all, children inherit half of their DNA from each parent: 50 percent from mom (through an egg), and 50 percent from dad (through sperm).