photo courtesy of The Urban Reptile

According to biology-online.org a polygenic trait is described as:

Polygenic traits are controlled by two or more than two genes (usually by many different genes) at different loci on different chromosomes. These genes are described as polygenes. Examples of human polygenic inheritance are height, skin colour and weight. Polygenes allow a wide range of physical traits. For instance, height is regulated by several genes so that there will be a wide range of heights in a population.

In Leopard Geckos polygenic traits are also called line bred traits. All the lines of Tangerine, Carrot Tail and non genetic snows are all polygenic. One o... [More]