Reptile & Amphibian Forums

if you take a HomoZ animal and breed it to a normal you will get all offspring het for that recessive HomoZ trait,i was just wondering if a HomoZ x Het pairing will produce"Better" hets and the desired trait females that will produce higher percentage of the desired trait,than a homo x normal. Knowing they all will be hets or homoZ. Wow in other words

normal x hypo = all HET hypo
hypo x Het hypo = HYPO and HET hypo ,are there more hypo genes in these HETs ?????than those from a normalx homo pairing.

What you are referring to is simple mendalin genetics.

A single allele (gene pair) is responsible for the trait.

The gene pair has two genes - one from momma and one from poppa.

Homozygous means both genes in the gene pair are the same.
Heterozygous means the genes in the gene pair are different.

If gene A is dominant and a is recessive -

Homozygous for dominant is AA on the gene pair.
Homozygous for recessive is aa on the gene pair.

Put those together - and all young get one gene from each, so all young are Aa - Heterozygous.

Now - Aa with aa -

Half of the young get A from the het parent.
Half of the younf get a from the het parent.
All of the young get a from the homo recessive parent.

So half the young are Aa and half of the young are aa

The Aa from that mating are no different with respecte to the recessive trait than any other Aa snake.

Goold "punnet square" for more information on simple recessive genetics.
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3.6 L. getula californiae
1.1 L. getula nigrita
1.0 Pantherophis guttatus guttatus
1.0 Thamnophis sirtalis fitchi
1.0 Boa constrictor constrictor (suriname, fostering/rescue)
3.3 Elgaria multicarinata multicarinata

Goold "punnet square"

should read

google "punnet square"
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3.6 L. getula californiae
1.1 L. getula nigrita
1.0 Pantherophis guttatus guttatus
1.0 Thamnophis sirtalis fitchi
1.0 Boa constrictor constrictor (suriname, fostering/rescue)
3.3 Elgaria multicarinata multicarinata

Thanx, i do recall some reading on the punnet square,my Q? just popped up in my head so thought id post Aa AA, isnt that Canadian for right, Aaaa

I don't think there is a "quality" of hetero genes. There are other factors that play into it.

For instance a very melanistic snake (a snake with dark tendencies and black tipping) is bred to an anerythristic snake you can possibly get very dark snakes. Did the melanistic trait create a “poor quality” hetero gene? Not likely, more likely the two traits did their own thing independent of each other.

In the same way an amelanistic that begins to show white tipping where black would be isn’t showing “poor melanistic” genes. Its doing exactly what the gene should do and produce white tipping.

I think this is where the linage of the snakes comes into play. Snakes that are bred to perfect a certain trait are then bred to a second trait till perfection. That’s where the top breeders have most other beat in regards to quality of their offspring.

If someone’s been breeding amazing snakes of one morph and cross those traits into a second morph they are all ready steps ahead of others. (Example ghost hondo VS anery hondo)