The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.
alleles
This phenomenon is known as multiple allelism, where there are more than two different variations of a gene (alleles) that can affect a single trait. In this case, individuals can inherit one of several possible alleles for the trait. Examples include the ABO blood group system in humans, where there are three alleles (IA, IB, i) that determine a person's blood type.
Dominant and Recessive Alleles Diploid organisms typically have two alleles for a trait. When allele pairs are the same, they are homozygous. When the alleles of a pair are heterozygous, the phenotype of one trait may be dominant and the other recessive.
The likelihood of inheriting a genetic trait with more than two alleles is rare. When a trait has multiple alleles, it can result in a wider range of possible expressions of that trait. This can lead to more variation in the phenotype among individuals who inherit different combinations of alleles for that trait.
Multiple alleles
gene therapy/ Polygenic trait
In the case of multiple alleles, one trait is governed by more than two alleles. One example is the human ABO blood group. There are three alleles, A, B, and O. A person can, however, only inherit two of the three alleles.
It isn't genome the definition of genome is a map of the location of individual genes on every chromosome of an individual. It's multiple alleles- having more than two alleles that control a trait. PS- I got this information from my text book:)
Even though there are more than two alleles, an individual can inherit only two, one from the mother and one from the father.
An organism that possesses two different alleles for a trait is said to be heterozygous for that trait.
In multiple-allele inheritance, there are more than two alleles possible for a trait. This means that instead of just two versions of a gene (alleles), there can be multiple variations that influence the trait in different ways. Examples of traits with multiple alleles include blood type in humans and coat color in rabbits.
Homozygous individuals have two identical alleles for a specific trait. This means they can be either homozygous dominant (two dominant alleles) or homozygous recessive (two recessive alleles). Homozygosity results in the expression of either the dominant or recessive trait.