Home
Class 12
BIOLOGY
ABO blood groups in human beings are con...

ABO blood groups in human beings are controlled by the gene `I`. The gene `I` has three alleles `- I^(A),I^(B)` and `i`. Since there are three different alleles, six different genotypes are possible
How many phenotypes can occur ?

A

Six

B

Two

C

Three

D

Four

Text Solution

Verified by Experts

The correct Answer is:
D
In human beings ABO blood groups are controlled by gene `I` which has three alleles `I^(A),I^(BV)` and `I`. The six possible genotypes are `I^(A)I^(A),I^(A)I^(B),I^(A) I,I^(B)I^(B),I^(B) i` and `ii`. He phenotypes which occur by these genotypes are `A(I^(A)I^(A),I^(A)i),B(I^(B)I^(B),I^(B)i),AB(I^(A)I^(B))` and `O(ii)`.
Promotional Banner

Similar Questions

Explore conceptually related problems

ABO blood groups in humans are controlled by the gene I. It has three alleles - IA, IB and i. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?

Three alleles namely 1^ A , I^B , and i control the blood grouping in human beings. How many different genotypes are likely to be present in the human population?

The genotypes of a Husband and Wife are [^A]^B and I^Ai Among the blood types of their children, how many different genotypes and phenotypes are possible?

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

In man, four types of blood groups A, B, AB and O are controlled by three alleles of a gene. Name the type of inheritance involved in blood group.

(i) A kabaddi coach has 14 players ready to play. How many different teams of 7 players could the coach put on the court? (ii) There are 15 persons in a party and if , each 2 of them shakes hands wit each with each other. How many handshakes happen in the party? (iii) How many chords can be drawn through 20 points on a circle? (iv) In a parking lot one hunderd, one year old cars are parked. Out of them five are to be chosen at random for to check its pollution devices. How many different set of five cars are possible? (v) How many ways can a team of 3 boys, 2 girls and 1 transgender be selected from 5 boys, 4 girls and 2 transgender?

There are n points in a plane in which no large no three are in a straight line except m which are all i straight line. Find the number of (i) different straight lines, (ii) different triangles, (iii) different quadrilaterals that can be formed with the given points as vertices.

State the allelic forms of I gene and mention its chromosome location