Problem

Solutions For An Introduction to Genetic Analysis Chapter 18 Problem 32P

Step-by-Step Solution

Solution 1

For all the matings given, since no prior information is given, we assume that they are not inbred. Hence, FA is 0.

a) Parent-offspring matings:

Picture 4

Since there are only two people in the pedigree:

Therefore, the inbreeding coefficient (F) for parent-offspring matings is 0.25.

b) First-cousin matings:

Picture 6

The two methods are:

• ACEDBI

• ACFDBI

Therefore, the inbreeding coefficient (F) for first-cousin matings is 0.0625.

c) Aunt-nephew or uncle-niece matings:

Picture 4

Since there are 3 paths:

Therefore, the inbreeding coefficient (F) for Aunt-nephew or uncle-niece matings is 0.125.

d) Self fertilization of a hermaphrodite:

Since only one person is involved, the pedigree involves only one circle.

Picture 6

Therefore, the inbreeding coefficient (F) for self-fertilization of a hermaphrodite is 0.5.

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Solutions For Problems in Chapter 18