Home
Class 12
BIOLOGY
ABO blood grouping is controlled by gene...

ABO blood grouping is controlled by gene I which has three alleles and shown co-dominance. How many phenotypes in all possible ?

A

Four

B

Five

C

Six

D

Three

Text Solution

AI Generated Solution

The correct Answer is:
To determine the number of phenotypes possible for ABO blood grouping controlled by gene I, which has three alleles (IA, IB, and IO) and shows co-dominance, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Alleles**: - The gene I has three alleles: IA, IB, and IO. - IA and IB are co-dominant to each other, while both are dominant over IO. 2. **Identifying the Genotypes**: - Since humans are diploid organisms, they have two alleles for the ABO blood group. - The possible combinations of these alleles (genotypes) are: - IAIA (Blood Group A) - IAIO (Blood Group A) - IBIB (Blood Group B) - IBIO (Blood Group B) - IAIB (Blood Group AB) - IOIO (Blood Group O) 3. **Determining the Phenotypes**: - From the genotypes, we can identify the phenotypes: - Blood Group A (from IAIA and IAIO) - Blood Group B (from IBIB and IBIO) - Blood Group AB (from IAIB) - Blood Group O (from IOIO) 4. **Counting the Unique Phenotypes**: - The unique phenotypes identified are: - A - B - AB - O - Therefore, there are a total of **4 unique phenotypes**. ### Final Answer: The total number of phenotypes possible for ABO blood grouping is **4**. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many phenotypes in all are possible?

ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes: How many phenotypes in all are responsible

ABO blood group is determined by gene I which has _____ alleles.

ABO blood groups in humans are controlled by the gene I. it has three alleles-AA,IB and i. since thrre are three different alleles, six different genotypes are possible. How many phenotypes can occur ?

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 –

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

ABO blood groups in humans are controlled by the gene I . It 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 ?

ABO blood groups is determined by three alleles:

In human beings, 'ABO' Blood group is controlled by which gene ?