Het Genes?

[Emily_Doughty]

I’m new to het genes and what not. If i breed a black pastel het piebald with anything, let’s say a mojave. What percentage het piebald would the offsprings be? How do I know if they are even het for it? I know there are different percentages of het, how would you determine what a hatchling would be without breeding it? :cens0r:

Sorry for the dumb questions I don’t really know too much about het genes.



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[StillBP]

They will be 50% het. And there is no way to be 100% sure who got what genes with out breeding

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[Emily_Doughty]

They will be 50% het. And there is no way to be 100% sure who got what genes with out breeding

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Thank you!


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[kenthebird]

In the future, you can easily do a Punnet square to figure out the genotype for offspring with recessive genes!

P p (het pied parent)
P PP Pp
P PP Pp
(Mojave parent/homozygous dominant for pied)

Since 2/4 hypothetical babies have Pp, there's a 50% chance that each baby will be Pp, or heterozygous/het pied. It can be proven het by breeding to another het pied or pied individual. There are however somewhat unsubstantiated claims that there are "tail markers" on het pieds, but the best way to determine is by breeding. I


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[paulh]

Homozygous and heterozygous refer to gene pairs, not to individual genes. All gene pairs are either homozygous or heterozygous.

A homozygous gene pair contains two copies of one gene. Two copies of the normal gene, or two copies of a mutant gene.

A heterozygous (het) gene pair contains two different genes. A normal gene and a mutant gene, or two different mutant genes.

The pied gene is recessive to the corresponding normal gene. For quickest identification of a possible het pied ball python, it is mated to a homozygous pied (AKA pied) ball python. Getting pied babies proves that the possible het pied parent really is a het. This type of cross is called a test cross. As the pied snake may not be available, mating the possible het to a het pied is acceptable, though slower than a real test cross. Mating a possible het pied snake to a homozygous normal snake qualifies as breeding but cannot identify the genes in the possible het's gene pair.

When the mutant gene is codominant to the normal gene, no test cross is necessary. By definition, the heterozygous snakes can be identified by the appearance.

For dominant mutant genes, a test cross is made when the possible het is mated to a homozygous normal snake. Getting normal babies proves that the possible het parent really is a het. As the homozygous mutant snake may not be available, mating the possible het to a het is acceptable, though slower than a real test cross.

[Sallos]

In the future, you can easily do a Punnet square to figure out the genotype for offspring with recessive genes!

Or you could be lazy like me and use an online Genetic Calculator. https://www.morphmarket.com/c/reptil...bald&s2=Mojave