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Genetics and Genomics

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Relationships Through Pedigrees: Grandparent to Grandprogeny

GENES-EU@HNT

A basic assumption of inheritance in sexually reproducing species is that half of the genetic material of an individual comes from each parent, and that a parent passes half of its genetic material to its offspring (the exception to this are the sex chromosomes).

Relationship from a pedigree sense can be viewed as the sharing of alleles that are identical by descent.

In regard to these fundamental concepts, what is the fraction of alleles expected to be shared between a grandparent and its grandchildren?

A

0%

B

25%

C

50%

D

75%

E

100%