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4.Principles of Inheritance and Variation
medium
A man with blood group $‘A’$ marries a woman with blood group $‘B’$. What are all the possible blood groups of their offsprings?
A
$A, B, AB$ and $O$
B
$O$ only
C
$A$ and $B$ only
D
$A, B$ and $AB$ only
(NEET-2015)
Solution
(a): The man has blood group $A$, thus its genotype can either be $I^AI^A$ or $I^AI^O$. Similarly, woman can either have $I^BI^B$, or $I^BI^O$ genotype. Thus, their offspring can have any of the blood groups $A$ $(I^AI^A$ or $I^AI^O)$, $B$ $(I^BI^B$ or $I^BI^O)$, $AB$ $(I^AI^B)$ or $O$ $(I^OI^O).$
Standard 12
Biology
