The number of phenotypes in ABO blood group i | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The $ABO$ blood group system in humans is controlled by the gene $I$. The gene $I$ has three alleles: $I^A, I^B,$ and $i$.Since there are three al

Vedclass · Accepted Answer

$4$

Vedclass · Answer

(B) The $ABO$ blood group system in humans is controlled by the gene $I$. The gene $I$ has three alleles: $I^A, I^B,$ and $i$.Since there are three alleles,the possible genotypes are $I^A I^A, I^A i, I^B I^B, I^B i, I^A I^B,$ and $ii$,totaling $6$ genotypes.However,the phenotypes are determined by the expression of these alleles. $I^A$ and $I^B$ are dominant over $i$,and $I^A$ and $I^B$ show codominance.The resulting phenotypes are:$1$. Type $A$ (from $I^A I^A$ or $I^A i$)$2$. Type $B$ (from $I^B I^B$ or $I^B i$)$3$. Type $AB$ (from $I^A I^B$)$4$. Type $O$ (from $ii$)Thus,there are $4$ distinct phenotypes.

The number of phenotypes in $ABO$ blood group is

Similar Questions

In which of the following can multiple alleles be observed?

If the father has $AB$ blood group and mother has $A$ blood group,then the children born to them will have the following blood groups $EXCEPT$ . . . . . . .

How many phenotypes and genotypes are possible in $ABO$ blood group systems?

$A$ man with blood group $B$ marries a woman with blood group $A$ and their first child has blood group $B$. What is the genotype of the child?

The genotypes of a husband and wife are $I^AI^B$ and $I^Ai$ respectively. How many different genotypes and phenotypes are possible among their children?

Vedclass Test Series

Exam Paper Generator

Online Exam Module