Question

what are multiple alleles?describe multiple alleles with the help of ABO blood groups in man​

Answer 1

Answer:

If a gene has more than two Allelic forms at the same locus on the homologous chromosomes in a population, the alleles are called multiple alleles the presence are absence of antigens on the plasma membrane of RBCs ABO blood group system includes four types

Explanation:

1.Blood type A Persons have antigen A on their RBCs and antibodies B in plasma

2.Blood type B persons have antigens B on their RBCs and antibodies A in their plasma

3.Blood type AB persons have antigens AandB on their RBCs but no antibodies present in their plasma

4.Blood type O persons have no antigens on their RBCs but both antibodies AandB present in their plasma

*Multiple alleles of a gene are not seen at individual level but seen at population level

Answer 2

Multiple alleles Three or more alternative forms of a gene (alleles) that can occupy the same locus. However, only two of the alleles can be present in a single organism. For example, the ABO system of blood groups is controlled by three alleles, only two of which are present in an individual

Hope you understand :)