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Question

The number of phenotypes and genotypes of blood groups in human beings are



A

4 phenotypes and 4 genotypes

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B

6 phenotypes and 6 genotypes

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C

6 phenotypes and 4 genotypes

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D

4 phenotypes and 6 genotypes

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Solution

The correct option is B

4 phenotypes and 6 genotypes


Blood group in human beings have four phenotypes namely A, B, AB and O. Blood group A has two genotypes (IAIA,IAi), blood group B has two genotypes (IBIB,IBi) and blood group AB (IAIB) and O (i i) have one genotype each. Thus adding upto 6 genotypes.


Biology

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