Mother is homozygous for blood group B,and fa | vedclass

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Question

(A) The mother is homozygous for blood group $B$,so her genotype is $I^B I^B$. The father has blood group $A$,which could be homozygous $(I^A I^A)$ or

Vedclass · Accepted Answer

$AB$ and $B$ possible

Vedclass · Answer

(A) The mother is homozygous for blood group $B$,so her genotype is $I^B I^B$. The father has blood group $A$,which could be homozygous $(I^A I^A)$ or heterozygous $(I^A I^O)$.If the father is $I^A I^A$,the cross is $I^B I^B 	imes I^A I^A$,resulting in $I^A I^B$ (blood group $AB$).If the father is $I^A I^O$,the cross is $I^B I^B 	imes I^A I^O$,resulting in $I^A I^B$ (blood group $AB$) and $I^B I^O$ (blood group $B$).Combining these possibilities,the progeny can have blood groups $AB$ and $B$.

Mother is homozygous for blood group $B$,and father has blood group $A$ (genotype unknown). Therefore,the possible blood groups in the progeny are:

Similar Questions

$ABO$ blood grouping in humans is controlled by the gene $I$. It has three alleles: $I^A, I^B,$ and $i$. Due to these three different alleles,six different genotypes are possible. How many phenotypes can be formed from these?

The genotypes of a husband and wife are $I^A I^B$ and $I^A I^O$. Among the blood types of their children,how many different genotypes and phenotypes are possible?

The number of phenotypes in $ABO$ blood group is

In which of the following phenomena can both dominance and codominance be observed?

$A$ child has blood group $O$. If the father has blood group $A$ and mother has blood group $B$,work out the genotypes of the parents and the possible genotypes of the other offspring.

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