Question

# The genotypes of a Husband and Wife are $$I^AI^B$$ and $$I^Ai$$. Among the blood types of their children, how many different genotypes and phenotypes are possible?

A
4 genotypes; 4 phenotypes
B
3 genotypes; 3 phenotypes
C
3 genotypes; 4 phenotypes
D
4 genotypes; 3 phenotypes

Solution

## The correct option is C $$4$$ genotypes; $$3$$ phenotypesThe genotype of a husband and wife are I$$^A$$I$$^B$$ and I$$^A$$I.Four different possible genotypes of their children are:I$$^A$$I$$^B$$, I$$^A$$I, I$$^B$$I, I$$^A$$I$$^A$$The possible number of phenotypes of their children are:Blood group A (I$$^A$$I$$^A$$, I$$^A$$I)Blood group B (I$$^B$$I)Blood group AB (I$$^A$$I$$^B$$)Thus, the correct answer is option D.Biology

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