With respect to text{ABO} blood groups,how ma | vedclass

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

Question

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

Vedclass · Accepted Answer

$6 \ \& \ 4$

Vedclass · Answer

(A) The $	ext{ABO}$ blood grouping 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 determined by the combinations of these alleles taken two at a time (including homozygotes). These are: $I^A I^A$,$I^A i$,$I^B I^B$,$I^B i$,$I^A I^B$,and $ii$. Thus,there are $6$ possible genotypes.The phenotypes are determined by the expression of these alleles. $I^A$ and $I^B$ are dominant over $i$,and $I^A$ and $I^B$ are codominant with each other. The possible phenotypes are: Blood group $A$ (from $I^A I^A$ or $I^A i$),Blood group $B$ (from $I^B I^B$ or $I^B i$),Blood group $AB$ (from $I^A I^B$),and Blood group $O$ (from $ii$). Thus,there are $4$ possible phenotypes.Therefore,the number of genotypes is $6$ and the number of phenotypes is $4$.

With respect to $\text{ABO}$ blood groups,how many genotypes and phenotypes,respectively,are possible in the human population?

Similar Questions

$A$ child with a mother of $B$ blood group and a father of $AB$ blood group will not have which of the following blood groups?

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 $EXCEPT$ . . . . . . .

$A$ couple has four children with blood groups $A, AB, A,$ and $O$ respectively. What are the genotypes of the parents' blood groups?

$A$ man with blood group $A$ marries a woman with blood group $AB$. Which type of offspring would indicate that the man is heterozygous for blood group $A$?

In humans,the $ABO$ blood group is controlled by the $I$ gene. It has three alleles: $I^A$,$I^B$,and $i$. Although there are three different alleles,six different genotypes are possible. How many phenotypes are observed in this case?

Vedclass Test Series

Exam Paper Generator

Online Exam Module