The proportion of shared genes between a grandparent and grandchild is _____ percent.
A)10
B)25
C)50
D)100

Question

Quizplus · Accepted Answer

A grandparent shares approximately 25% of their genes with their grandchild. This is because the grandparent’s child (the parent of the grandchild) carries 50% of the grandparent’s genes, and then passes on approximately 50% of those genes to their own child (the grandchild). Therefore, the proportion of shared genes between a grandparent and grandchild is 25%.

The Proportion of Shared Genes Between a Grandparent and Grandchild