Question

distinguish between multiple alles and polygenic inhertance.

Answer 1

Alleles refer to different versions of the same gene. So a single gene can havemultiple alleles. ... A polygenic trait refers to any inheritable trait that is controlled by multiple genes, and each of these genes can have multiple alleles. For example, eye color in humans is a polygenic trait.Polygenes are a group of (non-epistatic) genes that all control one trait. Multiple alleles are several variant forms of one gene.

Polygenes would include the three genes that control skin colour, or the several genes that could influence type 2 diabetes. Multiple alleles would be the I, I' and i genes that control blood group.

Answer 2

Multiple allelism is a phenomenon where a gene has more than 2 allele of it , for example ABO blood group
The gene I for ABO blood group has 4 alleles ( Ia, Ib, Iab, and Io )
While polygenic inheritence means multiple genes control a single character , for example Human height