Variations
Phenotypes
The trait will show a large number of variations or phenotypes due to the interactions between multiple genes. This is known as polygenic inheritance, where each gene contributes a small effect to the overall phenotype.
the number of genes that usually determine a trait
it is because they have genes
some human traits show a large number of phenotype because the traits are controlled by many genes. The genes act together as a group to produce a single trait
The least number is 2, however this is very rare. Most traits require many genes to produce a trait.
An inherited trait is typically determined by multiple genes working together. The exact number of genes involved can vary depending on the trait. In many cases, dozens to hundreds of genes may contribute to a single inherited trait.
The probable number of genes involved in polygenes can be calculated using statistical methods such as quantitative trait loci (QTL) mapping or genome-wide association studies (GWAS). These methods analyze the genetic variations and their effects on a particular trait to estimate the number of genes contributing to its polygenic nature. The specific number of genes involved can vary depending on the complexity of the trait and the techniques used for analysis.
A dominant trait is expressed when two different genes for the same trait are present.
Mendel identified the trait of dominance in certain genes.
domanant trait
epistasis