Chapter 12. Pedigree Analysis Simulation

In a pedigree analysis, a shaded circle is used to represent a(n) _______ and a partially shaded circle is used to represent an _______.

A human disease is observed to follow an autosomal dominant pattern of inheritance. Suppose a man who does not have the disease marries a woman who is homozygous for the disease. What are the chances that any of their children will have the disease?

Tongue-rolling is a human trait that follows an autosomal recessive pattern of inheritance. A woman with the tongue-rolling trait marries a man who is not a carrier for the trait. What will be true of the couple’s children?

A man affected by a recessive trait on the X chromosome marries a woman who neither shows the trait nor is a carrier. Which outcome is possible if they have two children—a son and a daughter?