Chapter 12, Lesson 5
Punnett Squares are tables used to determine the probability of characteristics inherited by children from their parents. All inherited characteristics are represented by two genes. A gene is either dominant (such as brown eyes, B) or recessive (blue eyes, b). A child with at least one brown-eye gene will have brown eyes. To have blue eyes, a child must have two blue-eye genes.
Suppose brown-eyed Mr. Lewison has only one brown-eye gene and Mrs. Lewison has blue eyes.
a. Create a Punnett Square that can be used to predict the eye color of Mr. and Mrs. Lewison's children.
b. What is the probability that Mr. and Mrs. Lewison will have a blue-eyed child? Write your answer as a percent.