What pattern of inheritance is most likely shown in the pedigree if the trait appears in every generation and affects both males and females equally?

How many generations are typically represented in a standard pedigree chart?

In a pedigree for a rare autosomal recessive trait, what is the probability that individual A is a carrier?

What is the most likely mode of inheritance for the trait shown in this pedigree?

What information can be obtained from a human pedigree?

Which of the following is a characteristic of an autosomal dominant disorder pedigree?

A man has a pointed frontal hairline known as a widow's peak. This trait is thought to be controlled by a dominant allele. His wife lacks a widow's peak, and their son has a widow's peak. (W: widow's peak; w: no widow's peak). The son is curious about whether his father is homozygous or heterozygous for the widow's peak trait. Which of the following facts would allow him to know?

Tay-Sachs disease runs in Rebecca's family. On a family pedigree, she saw a shaded circle. This represented a __________.