What is the Difference Between Allelic and Non allelic Gene?

The difference between allelic and non-allelic genes lies in their position on the chromosomes and their interaction with each other. Here are the key differences:

1. Position on chromosomes: Allelic genes are alternative forms of a gene that are present at the same location on homologous chromosomes. In contrast, non-allelic genes are present at different locations on the same homologous chromosome.
2. Interaction: Allelic genes interact with each other, which is referred to as allelic or non-epistatic gene interaction. This interaction occurs between the alleles of a single gene and can result in different phenotypes, such as in incomplete dominance. Non-allelic genes, on the other hand, interact with each other in a way that involves interactions between genes on identical or distinct chromosomes. This interaction is referred to as non-allelic or epistatic gene interaction.

In summary, allelic genes are alternative forms of a gene located at the same position on homologous chromosomes and interact with each other, while non-allelic genes are located at different positions on the same homologous chromosome and interact with each other in a way that involves interactions between genes on identical or distinct chromosomes.

Comparative Table: Allelic vs Non allelic Gene

Here is a table comparing allelic and non-allelic genes:

Both allelic and non-allelic genes affect gene expression in different ways due to their interactions.