Reptile Morph & Gene Library

Reptile Morph & Gene Library — Inheritance, Zygosities and Descriptions

Morph Library

Every gene on Breeders Direct — what it is, how it is inherited, and which species carry it

Brindle

Line bred colour trait

Broken or disrupted stripes/bands (vs clean Tiger stripes); more scattered pattern.

Line bred colour trait: A line-bred color trait refers to a specific color characteristic in animals that is maintained or intensified through line breeding.

Comes in High Expression Low Expression Visual
Species Crested Gecko

Co-Dominant Genetic Stripe

Co-Dominant

Genetic Stripe is usually a Recessive gene, in Bearded Dragons it only takes one copy for the gene to appear however it is usually a lower expression or quality stripe.

Co-Dominant: One copy is visibly expressed. Two copies produce a distinct "super" form, which differs from gene to gene — see the individual gene for what its super looks like.

Comes in Super Visual
Species Bearded Dragon

Flame / Stripe

Line bred colour trait

Contrasting color stripe/flame down dorsal (or along head/dorsum); body/legs may be base color.

Line bred colour trait: A line-bred color trait refers to a specific color characteristic in animals that is maintained or intensified through line breeding.

Comes in High Expression Low Expression Visual
Species Crested Gecko

Genetic Stripe

Recessive

Long dorsal stripe pattern mutation

Recessive: Requires two copies to express

Comes in 100% Het 50% Het 66% Het Visual
Species Ball Python

Patternless

Line bred colour trait

Solid color, no contrasting pattern (spots, stripes, etc.). May have color variations but no distinct pattern.

Line bred colour trait: A line-bred color trait refers to a specific color characteristic in animals that is maintained or intensified through line breeding.

Comes in High Expression Low Expression Visual
Species Crested Gecko

Pinstripe

Dominant

Thin striped pattern mutation

Dominant: Single gene sufficient to express

Comes in High Expression Low Expression
Species Ball Python Crested Gecko

Recessive Genetic Stripe

Recessive

A continuous stripe or rearranged patterning along the body.

Recessive: Requires two copies to express

Comes in 100% Het 50% Het 66% Het Visual
Species Ball Python Boa Constrictor Corn Snake Leopard Gecko Reticulated Python

Red Stripe

Co-Dominant

Reddish dorsal stripe influence

Co-Dominant: One copy is visibly expressed. Two copies produce a distinct "super" form, which differs from gene to gene — see the individual gene for what its super looks like.

Comes in Super Visual
Species Ball Python

Stripe

Recessive

Longitudinal striping along dorsum

Recessive: Requires two copies to express

Comes in 100% Het 50% Het 66% Het Visual
Species Corn Snake

Tessera

Dominant

Pattern mutation producing clean lateral stripe

Dominant: Single gene sufficient to express

Comes in High Expression Low Expression
Species Corn Snake

Tiger

Line bred colour trait

Vertical darker bands, often running over and down the sides (“tiger stripes”); variation in strength.

Line bred colour trait: A line-bred color trait refers to a specific color characteristic in animals that is maintained or intensified through line breeding.

Comes in High Expression Low Expression Visual
Species Crested Gecko Reticulated Python