Along with the basic five loci, there are several other gene sets, modifiers, and polygenes (a gene whose individual effect on a phenotype is too small to be observed, but which can act together with others to produce observable variation). I may delve further into these in later lessons, but for now a very short summary follows:
SECONDARY GENES
MODIFIERS & POLYGENESModifiers and polygenes can also affect colors and patterns, and don’t have specific known loci to track them. A couple of the more well-known modifiers are:
|