The Genetics Behind Leopard Gecko Patterns

The variety of leopard gecko patterns (known asrecessive albino trait. It's important to know when
morphs - that is, types that are visually distinct fromyou have a leo of the het albino phenotype
each other because of color and pattern variations)however, as otherwise you might just think it's a
available today is truly staggering. If you've only evernormal wild-type leopard gecko, and miss the
seen the standard 'wild' leopard gecko, then you oweopportunity to breed it with another het albino to try
it to yourself to check out some pictures ofto produce a homozygous albino.
spectacular morphs such as the Diablo Blanco, SuperIf you have two het albinos - a male and a female -
Hypo Carrot Tail, or Rainwater Mack Snow. Theythen each of their children has a 25% chance of
look as amazing as their names suggest.being a homozygous albino, and therefore looking like
Seeing these leo morphs might well get youan albino. If you have two albinos, then all of their
interested in breeding leopard geckos to producechildren will be of the albino phenotype too. Simple
them, and why not - it's a great hobby. However,enough?
the sting in the tail is that doing this requires you toThe other important concept to grasp is that of 'line
become an amateur geneticist, as otherwise youbred' traits. Line breeding refers to selecting leos with
simply won't be able to understand well enough howa certain trait that's a little different from the norm
to get the results you want.and breeding them together over successive
The first thing to learn is some frequently usedgenerations to emphasize that trait. The tangerine
terms. Phenotype, for example, refers to the traitsmorph, for example, was developed by picking a
that a creature has and is showing. Genotype on themale and a female leopard gecko that both happened
other hand refers to the traits that a creature isto have a slightly brighter background color than usual
carrying but not necessarily showing. A couple moreand breeding them together, then picking the
terms: heterozygous (or just 'het' for short) refers tobrightest of their children and breeding them
a creature that is carrying one copy of a specifictogether, and so on and so on over a number of
recessive trait and one copy of a normal trait.generations. Over time a really bright tangerine morph
Homozygous is the opposite: it refers to a creaturewas produced.
that is carrying two copies of the same trait.As you can see, the science here is technical but not
Ok, let's now use those terms: a leopard gecko oftoo complicated. With just a little study you'll learn all
the albino phenotype is homozygous. It looks like anyou need to know about leopard gecko patterns and
albino because it carries two copies of the recessivegenetics in order to produce striking (and valuable)
albino trait. A het albino leo, on the other hand, won'tmorphs of your own. Good luck!
look like an albino, as it carries only one copy of the