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A person that is heterozygous type A (AO) marries a person that is heterozygous type B (BO).


What is the probability that their potential offspring will be type O?


Question 3 options:


0%



25%



50%



75%



100%


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Verified Answer :

shayna3

A     O
B  AB   BO
O  AO  OO 

25%

gradman555p98x9p

The right answer is 25%

The offsprings are: AO, OO, AB, BO
.

Red blood cells with phenotype O can only correspond to a single OO genotype, but to phenotype A can correspond homozygous AA or heterozygous AO subjects. Phenotype B may also correspond BB homozygotes or BO heterozygotes. On the other hand, subjects AB are necessarily heterozygous, having inherited an allele A and a allele B.