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Leucistic Texas Rat Snake
- Thread starter denowt
- Start date
Serpwidgets
New member
Yep, leucism in Tx Rats is supposed to be controlled by a simple recessive mutant. 
Raiden The Almighty
New member
But what if you cross a lucistic texas rat with a corn and breed the F1 offspring. Will the F2 hatchlings be lucistic?
Serpwidgets
New member
Since the F1s are hets, a statistical 25% of the F2 hatchlings would be homozygous for the leucy mutant.Raiden The Almighty said:
When you're talking about fertile hybrids, IMO it would be the rare case where a mutant gene does not have at least a similar effect.
So yeah, my money would be on "you'd get some leucistics." :wavey:
D&LCornSnakes
New member
beacause they are not actually albino. i forget what it is exactly going on but im sure someone will respond more knowingly.
jennrosefx
*Insert Witty Title Here*
From Wikipedia
"Leucisim is one of two conditions that produces apparently anomalous white animals from parents that are otherwise normally coloured.
Leucisim is often mistaken for albinism, due to the similarity in the white colour exhibited by some animals. Leucistic animals lack all colour in their skin, fur, and feathers; but have normally coloured eyes. Like albinism, leucisim can be inherited by offspring, though not as consistently or reliably, and the gene does not appear to be fully recessive as is the case with albinism.
While albinism results in an animal lacking the normal melanin (and occasionally other) pigment cells, leucistic animals retain the cells; but lack an enzyme needed to activate the pigment. Albino animals -- most notably reptiles and birds, though the phenomenon has some parallels in fish as well -- can still retain colour from erythrin (red-orange) and xanthin (yellow) pigments; unlike leucistic animals, which do not have any active pigments.
Another key difference is that leucisim can also be localized and incomplete, affecting only part of the animal (whereas albinism, anerythrism, and axanthism always affects the entire animal); with irregular patches of white on an animal that otherwise has normal colouring and patterning. This produces what is known as a "pied" or piebald" effect; and the ratio of white to normal-coloured skin can vary considerably not only between generations, but between different offspring from the same parents, and even between members of the same litter."
"Leucisim is one of two conditions that produces apparently anomalous white animals from parents that are otherwise normally coloured.
Leucisim is often mistaken for albinism, due to the similarity in the white colour exhibited by some animals. Leucistic animals lack all colour in their skin, fur, and feathers; but have normally coloured eyes. Like albinism, leucisim can be inherited by offspring, though not as consistently or reliably, and the gene does not appear to be fully recessive as is the case with albinism.
While albinism results in an animal lacking the normal melanin (and occasionally other) pigment cells, leucistic animals retain the cells; but lack an enzyme needed to activate the pigment. Albino animals -- most notably reptiles and birds, though the phenomenon has some parallels in fish as well -- can still retain colour from erythrin (red-orange) and xanthin (yellow) pigments; unlike leucistic animals, which do not have any active pigments.
Another key difference is that leucisim can also be localized and incomplete, affecting only part of the animal (whereas albinism, anerythrism, and axanthism always affects the entire animal); with irregular patches of white on an animal that otherwise has normal colouring and patterning. This produces what is known as a "pied" or piebald" effect; and the ratio of white to normal-coloured skin can vary considerably not only between generations, but between different offspring from the same parents, and even between members of the same litter."