Which of the following calculations require the use of the addition rule of probability?
A) Calculate the probability of black offspring from the cross AaBb × AaBb, where B is the symbol for black.
B) Calculate the probability of children with both cystic fibrosis and polydactyly when parents are each heterozygous for both genes.
C) Calculate the probability of each of four children having cystic fibrosis if the parents are both heterozygous.
D) Calculate the probability of a child having either sickle-cell anemia or cystic fibrosis if parents are each heterozygous for both.

Question

Quizplus · Accepted Answer

The addition rule of probability is used when calculating the probability of two mutually exclusive events occurring. In this case, having sickle-cell anemia and cystic fibrosis are mutually exclusive events, and thus the addition rule is used. A, B, and C require different forms of probability calculations, such as Punnett squares and the product rule of probability.

Which of the Following Calculations Require the Use of the Addition