Genetic Terms:

Gene The basic unit of genetics, Genes come in pairs, one supplied from each parent. Each gene pair determines one specific trait. There are thousands of gene pairs in each strand of DNA.
Genotype A description of the genes in one individual, may include recessive traits where only one gene is present.  ie Het Albino
Phenotype Visual description of animal, excludes any non visual genes  ie, the same "Het Albino" Genotype would be "Normal" for the Phenotype.  
Mutant Gene Any gene that is different from the corresponding normal gene. Not necessarily a visual mutation.
Wild Type or Normal A snake (or trait) that looks like most of the snakes found in the wild. Also used to describe any individual gene that when paired up with a similar gene would produce a snake that, for that individual gene trait, would look like most of the snakes found in the wild.
Heterozygous (Het) Having two different genes within a gene pair. Most commonly one normal and one mutant but could be two different mutant genes.
Homozygous Having both genes within a gene pair the same. Can be normal or mutant.
Super Slang term commonly used when a snake has a gene pair that is Homozygous for either a dominant or incomplete dominant mutant gene.
Trait Physical appearance that it distinguishable from the normal physical appearance.
Recessive Mutant Gene Trait is only expressed when the gene pair is Homozygous for the specific mutant gene.
Dominant Mutant Gene A mutant gene that has it trait expressed when the gene pair is either heterozygous or Homozygous for that specific mutant gene. Heterozygous and homozygous specimens are not 100% distinguishable from each other. Note, with some dominant traits some of the specimens can be visually identified as heterozygous or homozygous.
Incomplete Dominant Mutant Gene Similar to “dominant mutant gene” except there are three distinct expressions, normal, het and Super. The three different levels can be distinguished from each other 100% of the time.
Co-Dominant Mutant Gene Term often misused to describe Incomplete Dominant.  Is correctly used to describe a physical trait that is expressed by two different genes on the same location.  example: Paradigm in BCI is one Sharp Albino gene paired with one Boawoman Caramel Gene producing an animal visually different from  Normal, Albino or Caramel.
Double Het (DH) Two gene pairs where one gene in each pair is normal and the second gene is a mutant gene. I.e. double heterozygous for snow would have a normal gene paired with an albino gene and a normal gene paired with an anerythristic gene.
Triple Het (TH) Same as double heterozygous except applies to three gene pairs.

Dave Colling
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