The ABO blood group has three alleles (A, B, O). If a woman with genotype AO mates with a man with genotype BB, the expected proportion of heterozygotes among their offspring is A. 50 percent OB. 5 percent c. 100 percent D. 25 percent

C. 100 percent

Explanation:

The woman is heterozygote: AO, while the man is homozygote: BB

By crossing the two:

AO   x  BB

A+B, A+B, O+B, O+B

AB, AB, OB, OB

We have two AB and two OB offspring. Both AB and OB are heterozygotes.

Thus all their offspring will be heterozygous.

Had the question asked what proportion will be OB, the answer would have been 50%.

Since the question asked, what proportion will be heterozygotes and not about the specific genotype, the correct answer is C. 100 percent

it is a learned trait

explanation:

it also supports my hypothesis. if you rest first you can squeeze the clothespin more times. from the data i collected the average of the eight people concluded exercise makes your muscles more fatigued and less able to squeeze the clothespin compared to resting before squeezing.