When a child is born with down syndrome when did the mutation occur
1 answer:
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Answer:
The correct answer would be A. types A and B.
In ABO blood group, blood group is determined by three alleles and
.
and
are codominant to each other whereas
is recessive to the other two.
The genotype of one parent is . So, two types of gametes would be produced
and
The genotype of second parent is . So, the gamete produced would be
.
The cross would result in the production of offspring with genotype and
.
Thus, the phenotype of the offspring would be blood group A and B.
