understanding genetics? im confused

[jessica87]

my normal is 50% het lavender albino. the sire is a 100% het lavender albino and the dam is 66% het lavender albino. the mother looks like a normal while the father is albino. so if i decided to try breeding her when shes ready is their a (small chance) to have one offspring that is lavender albino? what is a het by the way?

[Raven01]

"Het" is short for heterozygous and usually reserved for discussing recessive traits.
If you cross a visual recessive animal to one that does not carry that gene you end up with offspring which are 100% "het" meaning they carry one copy with absolute certainty of the recessive gene.
If you cross a 100% het with an animal that does not have the gene the offspring would have a 50% probability of also carrying one copy of the recessive gene. These are commonly referred to as 50% hets.
If you cross 2 animals known to be 100% het for the gene then the offspring have a 25% of expressing the recessive trait and of the remaining 75% that appear to be normals 2/3 have the likelihood of carrying one copy of the gene so, are referred to as 66% heterozygous.

If, through breeding you can verify that a het does indeed carry the gene in question by producing visuals it is no longer considered the 50% or 66% het you bought but, a verified 100% het.

[jessica87]

im more confuse.. i `was` thinking bout breeding in the future ok so their is a 50/50 chance that my normal holds the lavender albino gene?

[Pythonfriend]

if it looks like a lavender albino, it is a lavender albino. we call that a visual, its not a het.


snakes (like humans) have two sets of chromosomes, two sets of genetic information. one from mom, one from dad. for a visual recessive like a lavender albino, there need to be two copies of the gene. hets look like normals, but carry one copy.

if you breed a visual to a completely normal BP, all of the offspring will have one copy, they will all be het for lavender albino. but you dont get more visuals that look like lavender albinos.

and if you breed a visual to a het, half of them get two copies and will be visuals, the other half gets one copy, these will again be hets.

50% possible het means: either it has one copy of the gene and is a het, or its really just a normal and does not carry the gene.

i hope this helps. one final note: lavender albino and albino look quite similar, but the genes are incompatible. they dont interact. meaning if you breed lavender albino to het albino (regular albino, not lavender), all offspring will look normal.

[ROACH]

my normal is 50% het lavender albino. the sire is a 100% het lavender albino and the dam is 66% het lavender albino. the mother looks like a normal while the father is albino. so if i decided to try breeding her when shes ready is their a (small chance) to have one offspring that is lavender albino? what is a het by the way?

See now Im confused! Did you mean to say the father was Lavender Albino, or he is a Albino? If you were breed a 100% Het Lavender Albino to a Normal you would get 1/2 50% Normals and 1/2 50% Het Lavender Albinos. You would need to breed your Het to a Lavender Albino to prove it out.

[John1982]

my normal is 50% het lavender albino. the sire is a 100% het lavender albino and the dam is 66% het lavender albino. the mother looks like a normal while the father is albino. so if i decided to try breeding her when shes ready is their a (small chance) to have one offspring that is lavender albino? what is a het by the way?

I'm assuming since your snake was sold to you as 50% possible het that the female didn't prove out in that pairing.

im more confuse.. i `was` thinking bout breeding in the future ok so their is a 50/50 chance that my normal holds the lavender albino gene?

Correct, your snake is either a heterozygous lavender albino or a normal. The percentages are just added to animals so you know the odds and can take your chances accordingly. That you have a 50% possible het is no reason not to breed though - far stranger things happen than proving out a het. I do suggest pairing it with a visual(homozygous) animal though so you will at least produce 100% het babies.

[paulh]

what is a het by the way?

Genes come in pairs, like socks. A het is a creature that has a heterozygous gene pair. All gene pairs are either homozygous or heterozygous.

A homozygous gene pair has two copies of the same gene; the two genes are the same. Examples: two normal genes, two albino genes, two pinstripe genes, two mojave genes.

A heterozygous gene pair has one copy each of two slightly different genes; the two genes are NOT the same. Examples: a normal gene and an albino gene, a normal gene and a pinstripe gene, a normal gene and a mojave gene, a lesser gene and a mojave gene.

Herpers most commonly use "het" when a recessive mutant gene is paired with a normal gene. However, the word can be applied to any creature with a heterozygous gene pair, such a blue-eyed leucistic ball python with a gene pair made up of a lesser gene and a mojave gene. Or a creature with a dominant mutant gene paired with a normal gene. Such hets look like a creature with two copies of the dominant mutant gene. The restriction is due to there being very few dominant mutant genes known in ball pythons.

[jessica87]

See now Im confused! Did you mean to say the father was Lavender Albino, or he is a Albino? If you were breed a 100% Het Lavender Albino to a Normal you would get 1/2 50% Normals and 1/2 50% Het Lavender Albinos. You would need to breed your Het to a Lavender Albino to prove it out.

I mean Lavender Albino..



So what is a double Het??

[Pythonfriend]

I mean Lavender Albino..



So what is a double Het??

a double het is a BP that is het for two different things. a triple het is a BP that is het for 3 different things. a quadruple het is a BP that is het for 4 different things.

its like with cheeseburger, double cheeseburger, triple cheeseburger and so on. more stuff inside.