Question

Explain inheritance by multiple alleles.

Answer 1

when a genetic trait is controlled by more than one alleles of its gene, the phenomenon is known as multiple allelism. More than 2 alleles are present in population for such traits, but an organisms can contain only 2 of those alleles- one each on one chromosome copy.
eg: 1. ABO blood group in humans- had 3 alleles- a, b and o
2. eye color in Drosophila melanogaster - more than 100 alleles

Answer 2

Multiple alleles is a type of non-Mendelian inheritance pattern that involves more than just the typical two alleles that usually code for a certain characteristic in a species. ... Other alleles may be co-dominant together and show their traits equally in the phenotype of the individual.

Hope you understand