One complete rung can only hold a total of two genes. Visual Pastel occurs when a cockatiel has either two pastel genes OR if it has one white face gene and one pastel gene. A cockatiel with only one pastel gene but no white face gene would still have an orange cheek patch. This allows the otherwise recessive pastel gene to do its magic on the other half. For more Information on Genetics visit us here.
Duplication is forbidden.
This page and all of its contents 1995-2001.