NEET Biology question

The offspring produced from a marriage have only O or A blood groups. Which of the following genotypes would be, the possible genotypes of the parents?

(A) and
(B) and
(C) and
(D) and Correct

Answer: (D)

Solution

For the offspring to show only blood groups O and A (never B or AB), neither parent can carry the allele; if both parents are heterozygous , their offspring occur in the genotypic ratio , which phenotypically gives both A

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Question ID VK-119562