All reptile coloration is derived from (3) possible pigments, Melanin (Black), Xanthinin (Yellow) and Erythrinin (Red). Some animals may be missing one or more of these pigments, or may have more or less of the pigment than is normally present. The terminology is made up from a prefix and the name or the pigment involved.Below is a list of the possible descriptions of the different animal coloration's.
Melanin - Black
Amelanistic - No black pigment
Hypomelanistic - Less than normal black pigment
Xanthinin - Yellow
Axanthic - No yellow pigment
Hypoxanthic - Less than normal yellow pigment
Erythrinin - Red
Anerythristic - No red pigment
Hypoerythristic - Less than normal red pigment
Hypererythristic - More than normal red pigment
A or AN - None
Hyper - More than normal
Hypo - Less than normal
An animal carries two copies of every gene. Alternate forms of the gene are called alleles.
Recessive - A recessive trait only manifests itself if both parents carry the trait or dominate gene.
Dominant - The trait will present itself even when the animal carries recessive genes for something else.
Heterozygous (Het) - The animals carry both the recessive gene and dominant alleles but otherwise looks normal.
Genetics Wizard is an excellent site that will calculate the genetic makeup of offspring from dominant, codominant and recessive gene crosses.
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