What is the likelihood of your sharing an allele with a parent or with a sibling?
A)The chance that you share an allele with either a parent or a sibling is one fourth.
B)The chance that you share an allele with either a parent or a sibling is one half.
C)The chance that you share an allele with a parent is one-half and with a sibling,one fourth.
D)The chance that you share an allele with a parent is one-fourth and with a sibling,one eighth.

Question

Quizplus · Accepted Answer

You inherit half of your alleles from each parent, so the chance of sharing an allele with a parent is one-half. Similarly, siblings inherit about half of their alleles from each parent, so the chance of sharing an allele with a sibling is also one-half. Therefore, the chance of sharing an allele with either a parent or a sibling is one half.

What Is the Likelihood of Your Sharing an Allele with a Parent