Multiple allelism is a genetic phenomenon where more than two alleles exist for a single gene within a population. While an individual typically inherits two alleles for each gene (one from each parent), multiple alleles can exist in a population, increasing genetic diversity. A classic example is the ABO blood group system, where the A, B, and O alleles determine blood type. In this system, both A and B are dominant, while O is recessive. Multiple allelism allows for a greater variety of genetic combinations, influencing traits in a population more complexly than simple Mendelian inheritance.

2. III. Multiple Allelism
- the state of having several forms
of a particular gene leading to
more than two phenotypes

3. What is your idea about blood, is it solid or
liquid?

11. Human ABO Blood Types
Blood Types Genotypes
A
IA
IA
IA
i
B
IB
IB
IB
i
AB IA
IB
O ii