NEET 2015 Biology question

A man with blood group 'A' marries a woman with blood group 'B'. What are all the possible blood groups of their offsprings ?

(1)A,B and AB only
(2)A,B,AB and OCorrect
(3)O only
(4)A and B only

Answer: (2)

Solution

Blood group A may be or , and blood group B may be or . Since the genotypes of the parents are not specified, consider all combinations. If both parents are heterozygous (), the children can

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Question ID VK-091714