A type O woman marries a man with type B blood, given that both of their mothers were type O, predict their possible offspring.

For a woman with type O blood and a man with type B blood, whose mother was of type O blood, the possible offspring will consist of B and O children.

Explanation:

Blood type is an inherited trait and is determined by the presence or absence of antigens A and B on the surface of the erythrocyte:

Blood type A contains the antigen A and its genotype can be A|A or A|O. Blood type B contains the antigen B, whose genotype may be B|B or B|O. Blood type AB contains both antigens and a single genotype expression A|B. Blood type O  lacks surface antigens, with a unique O|O genotype.

In the above case, the woman has an O blood type, whose genotype is O|O. The male must be heterozygous, since his mother was of blood type O, so his genotype is B|O.

♂ B|O ♀ O|O

To know the possible descendants of this couple, the crossing of the wolf alleles must be done:

Alleles      B      O

O              B|O   O|O

O              B|O   O|O

From where the probabilities of the offspring are obtained:

Individuals with blood type B and genotype B|O 50% Individuals with blood type O and genotype O|O 50%

Therefore, from this crossing only descendants of individuals with blood type B and O can be obtained.

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