The Coefficient of Relatedness of a Human Child to Its

Question

The coefficient of relatedness of a human child to its full sibling is,on average,
A)0.25.
B)0.5.
C)0.75.
D)1.
E)1.5.

Accepted Answer

The coefficient of relatedness between full siblings is expected to be 0.5, as they share half their genes from each parent. This also means that they inherit different alleles at some of the same loci. Therefore, they are more closely related than half-siblings (0.25) or first cousins (0.125).