First slide

Inheritance of One Gene

Question

A person having homozygous A blood group marries a woman with AB blood group. The phenotypes of the offspring will be:

Easy

A

A blood group only
B

AB blood group only
C

A or AB blood group
D

A, B or AB blood group

Solution

Man: $I_{A} I_{A}$
Woman: $I_{A} I_{B}$
$I_{A} I_{A} x I_{A} I_{B}$
Male Gametes: $I_{A}$
Female Gametes: $I_{A}, I_{B}$
Offspring: $I_{A} I_{A}$ and $I_{A} I_{B}$

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