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