Question

What is the difference between multiple alleles and polygenic?

Answer 1

Hint: An allele is one of two or more gene variants. For each gene, an individual inherits two alleles, one from each parent. If the two alleles are identical, the person is homozygous for that gene.

Complete answer:
The number of DNA strands involved is the primary distinguishing factor. Multiple alleles involve the same DNA strand, whereas polygenic inheritance involves multiple DNA strands.
Polygenic features are regulated by a set of non-allelic genes, whereas numerous alleles involve multiple variant forms of a gene. Environmental factors have little effect on the determination of traits when numerous alleles are expressed. In Polygenic inheritance, however, environmental influences have a substantial impact on the determination of a phenotype.
Multiple alleles are present on the same DNA strand acquired by a code building A type proteins, B type proteins, or no proteins. As a result, there is one gene but three alleles in blood type. A, B, AB, and O blood types are among the many phenotypes.
Antibiotics are formed on multiple locations of the DNA to combat bacteria and other pathogens, which is an example of polygenic inheritance. Multiple locations can be linked in almost infinite combinations, allowing the immune system to respond to threats that did not exist in a previous genetic generation.
Take hair colour as an example, where several genes affect one feature although there are numerous phenotypes.

Note:
In the context of evolution, the concept of many alleles is crucial. Alleles must be able to change in order for natural selection to take place. Evolution occurs as a result of continued natural selection. There are numerous different allelic forms that can regulate phenotypic features like fur colour within a population.