I started to create a page describing basic Herp Genetics, but I found an excellent set of webpages created by New England Reptile Distributors that give a terrific presentation and background on Herp Genetics! There's no reason to reinvent the wheel when they have done such a masterful job, so if you need to learn the basics of Herp Genetics, please visit NERD's Intro to Reptile Genetics. I have listed below the potential breeding outcomes of litters from the snakes that I have or that I have available for sale. Please remember that these outcomes are according to the Punnett Square, and actual outcomes may (and probably will) differ, especially if the litter is small! Click the Plus sign next to each breeding matchup to see the results. If needed, a list of genetic terms can be found here. If you have a litter from a Normal 66% Possible Double Het, and you want to see what genes the parents could possess, take a look at the Success! section at the bottom of this page. You can also use the Success! section to determine what it will take to produce a certain type of morph. Key of Alleles: A - Normal allele for melanin production a - Recessive allele for albinism N - Normal allele for erythrin production n - recessive allele for anerytherism - 1. Normal 66% Possible Double Het Sharp Snow (Sharp Albino and Anery) x Normal 66% Possible DH Sharp Snow (Sharp Albino and Anery) - both prove to be Double Hets:
| DH Sharp Snow (Albino & Anery - AaNn) x DH Sharp Snow (Albino & Anery - AaNn) |
|---|
Possible Gene Pairings (Gametes) | AN | An | aN | an | AN | AANN | AANn | AaNN | AaNn |
|---|
An | AANn | AAnn | AaNn | Aann |
|---|
aN | AaNN | AaNn | aaNN | aaNn |
|---|
an | AaNn | Aann | aaNn | aann |
|---|
- Result Totals (for every 16 offspring):
- (1) Snow (aann) (6.3% of litter)
- (2) Albinos Het for Anery (aaNn) (12.5% of litter)
- (1) Albino (aaNN) (6.3% of litter)
- (2) Anerys Het for Albino (Aann) (12.5% of litter)
- (1) Anery (AAnn) (6.3% of litter)
- (4) Double Hets for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (2) Het for Albino (AaNN) (12.5% of litter)
- (2) Het for Anery (AANn) (12.5% of litter)
- (1) Normal (AANN) (6.3% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANN | Normal | 9 | Normal 66% Possible DH Snow (Albino and Anery) OR 44.4% Poss. DH, 22.2% Poss. Het for Albino, and 22.2% Poss. Het for Anery | 6.3% | 2 | AANn | Normal Het for Anery | 12.5% | 2 | AaNN | Normal Het for Albino | 12.5% | 4 | AaNn | Double Het for Albino & Anery | 25% | 1 | AAnn | Anery | 3 | Anery 66% Possible Het for Albino (Het Snow) | 6.3% | 2 | Aann | Anery and Het for Albino | 12.5% | 1 | aaNN | Albino | 3 | Albino 66% Possible Het for Anery (Het Snow) | 6.3% | 2 | aaNn | Albino and Het for Anery | 12.5% | 1 | aann | Albino and Anery | 1 | Snow | 6.3% |
- 2. 66% Poss. DH x 66% Poss. DH - one proves to be Double Het, other proves to be Het Albino:
| DH Sharp Snow (Albino & Anery - AaNn) x Het Albino (AaNN) |
|---|
Possible Gene Pairings (Gametes) | AN | aN | AN | AANN | AaNN |
|---|
An | AANn | AaNn |
|---|
aN | AaNN | aaNN |
|---|
an | AaNn | aaNn |
|---|
- Result Totals (for every 8 offspring):
- (1) Albino Het Anery (aaNn) (12.5% of litter)
- (1) Albino (aaNN) (12.5% of litter)
- (2) Double Hets for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (2) Het for Albino (AaNN) (25% of litter)
- (1) Het for Anery (AANn) (12.5% of litter)
- (1) Normal (AANN) (12.5% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANN | Normal | 6 | Normal 66% Possible DH Snow (Albino and Anery) OR 33.3% Poss. DH, 33.3% Poss. Het for Albino, and 16.6% Poss. Het for Anery | 12.5% | 1 | AANn | Normal Het for Anery | 12.5% | 2 | AaNN | Normal Het for Albino | 25% | 2 | AaNn | Double Het for Albino & Anery | 25% | 1 | aaNN | Albino | 2 | Albino 50% Possible Het for Anery (Het Snow) | 12.5% | 1 | aaNn | Albino and Het for Anery | 12.5% |
- 3. 66% Poss. DH x 66% Poss. DH - one proves to be Double Het, other proves to be Het Anery:
| DH Sharp Snow (Albino & Anery - AaNn) x Het Anery (AANn) |
|---|
Possible Gene Pairings (Gametes) | AN | An | AN | AANN | AANn |
|---|
An | AANn | AAnn |
|---|
aN | AaNN | AaNn |
|---|
an | AaNn | Aann |
|---|
- Result Totals (for every 8 offspring):
- (1) Anery Het Albino (Aann) (12.5% of litter)
- (1) Anery (AAnn) (12.5% of litter)
- (2) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Albino (AaNN) (12.5% of litter)
- (2) Het for Anery (AANn) (25% of litter)
- (1) Normal (AANN) (12.5% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANN | Normal | 6 | Normal 66% Possible DH Snow (Albino and Anery) OR 33.3% Poss. DH, 33.3% Poss. Het for Anery, and 16.6% Poss. Het for Albino | 12.5% | 2 | AANn | Normal Het for Anery | 25% | 1 | AaNN | Normal Het for Albino | 12.5% | 2 | AaNn | Double Het for Albino & Anery | 25% | 1 | AAnn | Anery | 2 | Anery 50% Possible Het for Albino (Het Snow) | 12.5% | 1 | Aann | Anery and Het for Albino | 12.5% |
- 4. 66% Poss. DH x 66% Poss. DH - one proves to be Double Het, other proves to be a Normal:
| DH Sharp Snow (Albino & Anery - AaNn) x Normal (AANN) |
|---|
Possible Gene Pairings (Gametes) | AN | AN | AANN |
|---|
An | AANn |
|---|
aN | AaNN |
|---|
an | AaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Albino (AaNN) (25% of litter)
- (1) Het for Anery (AANn) (25% of litter)
- (1) Normal (AANN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANN | Normal | 4 | Normal 66% Possible DH Snow (Albino and Anery) OR 25% Poss. DH, 25% Poss. Het for Anery, and 25% Poss. Het for Albino | 25% | 1 | AANn | Normal Het for Anery | 25% | 1 | AaNN | Normal Het for Albino | 25% | 1 | AaNn | Double Het for Albino & Anery | 25% |
- 5. 66% Poss. DH x 66% Poss. DH - one proves to be Het Albino, other proves to be Het Albino:
| Het Sharp Albino (Aa) x Het Sharp Albino (Aa) |
|---|
Possible Gene Pairings (Gametes) | A | a | A | AA | Aa |
|---|
a | Aa | aa |
|---|
- Result Totals (for every 4 offspring):
- (1) Albino (aa) (25% of litter)
- (2) Het for Albino (Aa) (50% of litter)
- (1) Normal (AA) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AA | Normal | 3 | Normal 66% Possible Het for Albino | 25% | 2 | Aa | Normal Het for Albino | 50% | 1 | aa | Albino | 1 | Albino | 25% |
- 6. 66% Poss. DH x 66% Poss. DH - one proves to be Het Albino, other proves to be Het Anery:
| Het Sharp Albino (Aa) x Het Anery (An) |
|---|
Possible Gene Pairings (Gametes) | A | n | A | AA | An |
|---|
a | Aa | an |
|---|
- Result Totals (for every 4 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (an) (25% of litter)
- (1) Het for Albino (Aa) (25% of litter)
- (1) Het for Anery (An) (25% of litter)
- (1) Normal (AA) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AA | Normal | 4 | Normal 66% Possible DH Snow (Albino and Anery) OR 25% Poss. DH, 25% Poss. Het for Anery, and 25% Poss. Het for Albino | 25% | 1 | An | Normal Het for Anery | 25% | 1 | Aa | Normal Het for Albino | 25% | 1 | an | Double Het for Albino & Anery | 25% |
- 7. 66% Poss. DH x 66% Poss. DH - one proves to be Het Albino, other proves to be a Normal:
| Het Sharp Albino (Aa) x Normal (AA) |
|---|
Possible Gene Pairings (Gametes) | A | A | A | AA | AA |
|---|
a | Aa | Aa |
|---|
- Result Totals (for every 4 offspring):
- (2) Het for Albino (Aa) (50% of litter)
- (2) Normal (AA) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 2 | AA | Normal | 4 | Normal 50% Possible Het Albino | 50% | 2 | Aa | Normal Het for Albino | 50% |
- 8. 66% Poss. DH x 66% Poss. DH - one proves to be Het Anery, other proves to be Het Anery:
| Het Anery (Nn) x Het Anery (Nn) |
|---|
Possible Gene Pairings (Gametes) | N | n | N | NN | Nn |
|---|
n | Nn | nn |
|---|
- Result Totals (for every 4 offspring):
- (1) Anery (nn) (25% of litter)
- (2) Normal Het Anery (Nn) (50% of litter)
- (1) Normal (NN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | NN | Normal | 3 | Normal 66% Possible Het Anery | 25% | 2 | Nn | Normal Het for Anery | 50% | 1 | nn | Anery | 1 | Anery | 25% |
- 9. 66% Poss. DH x 66% Poss. DH - one proves to be Het Anery, other proves to be a Normal:
| Het Anery (Nn) x Normal (NN) |
|---|
Possible Gene Pairings (Gametes) | N | N | N | NN | NN |
|---|
n | Nn | Nn |
|---|
- Result Totals (for every 4 offspring):
- (2) Het for Anery (Nn) (50% of litter)
- (2) Normal (NN) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 2 | NN | Normal | 4 | Normal 50% Possible Het Anery | 50% | 2 | Nn | Normal Het for Anery | 50% |
- 10. 66% Poss. DH x 66% Poss. DH - one proves to be a Normal, other proves to be a Normal:
| Normal (NN) x Normal (NN) |
|---|
Possible Gene Pairings (Gametes) | N | N | N | NN | NN |
|---|
N | NN | NN |
|---|
- Result Totals:
- Normal (NN) (100% of litter)
- 11. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal Poss. DH proves to be Double Het, and Albino proves to be Het Anery:
| DH Sharp Snow (Albino & Anery - AaNn) x Sharp Albino Het Anery (aaNn) |
|---|
Possible Gene Pairings (Gametes) | aN | an | AN | AaNN | AaNn |
|---|
An | AaNn | Aann |
|---|
aN | aaNN | aaNn |
|---|
an | aaNn | aann |
|---|
- Result Totals (for every 8 offspring):
- (1) Snow (aann) (12.5% of litter)
- (2) Albino Het for Anery (aaNn) (25% of litter)
- (1) Albino (aaNN) (12.5% of litter)
- (1) Anery Het for Albino (Aann) (12.5% of litter)
- (2) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Albino (AaNN) (12.5% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNN | Normal Het for Albino | 3 | Normal 66% Possible DH Snow (Albino and Anery) | 12.5% | 2 | AaNn | Double Het for Albino & Anery | 25% | 1 | Aann | Anery and Het for Albino | 1 | Anery Het for Albino (Het Snow) | 12.5% | 1 | aaNN | Albino | 3 | Albino 66% Possible Het for Anery (Het Snow) | 12.5% | 2 | aaNn | Albino and Het for Anery | 25% | 1 | aann | Albino and Anery | 1 | Snow | 12.5% |
- 12. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be Double Het, and Albino does not prove to be Het Anery:
| DH Sharp Snow (Albino & Anery - AaNn) x Sharp Albino (aaNN) |
|---|
Possible Gene Pairings (Gametes) | aN | AN | AaNN |
|---|
| An | AaNn |
|---|
| aN | aaNN |
|---|
an | aaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Albino Het for Anery (aaNn) (25% of litter)
- (1) Albino (aaNN) (25% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Albino (AaNN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNN | Normal Het for Albino | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 25% | 1 | AaNn | Double Het for Albino & Anery | 25% | 1 | aaNN | Albino | 2 | Albino 50% Possible Het for Anery (Het Snow) | 25% | 1 | aaNn | Albino Het for Anery | 25% |
- 13. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be Het Albino, and Albino proves to be Het Anery:
| Het Sharp Albino (AaNN) x Albino Het Anery (aaNn) |
|---|
Possible Gene Pairings (Gametes) | aN | an | AN | AaNN | AaNn |
|---|
| aN | aaNN | aaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Albino Het for Anery (aaNn) (25% of litter)
- (1) Albino (aaNN) (25% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Albino (AaNN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNN | Normal Het for Albino | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 25% | 1 | AaNn | Double Het for Albino & Anery | 25% | 1 | aaNN | Albino | 2 | Albino 50% Possible Het for Anery (Het Snow) | 25% | 1 | aaNn | Albino and Het for Anery | 25% |
- 14. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be Het Albino, and Albino proves to not be Het Anery:
| Het Albino (Aa) x Albino (aa) |
|---|
Possible Gene Pairings (Gametes) | a | a | A | Aa | Aa |
|---|
a | aa | aa |
|---|
- Result Totals (for every 4 offspring):
- (2) Albino (aa) (50% of litter)
- (2) Het for Albino (Aa) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 2 | Aa | Het for Albino | 2 | Het for Albino | 50% | 2 | aa | Albino | 2 | Albino | 50% |
- 15. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be Het Anery, and Albino proves to be Het Anery:
| Het Anery (AANn) x Albino Het Anery (aaNn) |
|---|
Possible Gene Pairings (Gametes) | aN | an | AN | AaNN | AaNn |
|---|
| An | AaNn | Aann |
|---|
- Result Totals (for every 4 offspring):
- (1) Anery Het Albino (Aann) (25% of litter)
- (2) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Het Albino (AaNN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNN | Het Albino | 3 | Normal 66% Possible DH Snow (Albino and Anery) | 25% | 2 | AaNn | Double Het for Albino & Anery | 50% | 1 | Aann | Anery Het Albino | 1 | Anery Het Albino (Het Snow) | 25% |
- 16. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be Het Anery, and Albino proves to not be Het Anery:
| Het Anery (AANn) x Albino (aaNN) |
|---|
Possible Gene Pairings (Gametes) | aN | AN | AaNN |
|---|
An | AaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Het for Albino (AaNN) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNn | Double Het for Albino & Anery | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 50% | 1 | AaNN | Het for Albino | 50% |
- 17. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be a Normal, and Albino proves to be Het Anery:
| Normal (AANN) x Sharp Albino Het Anery (aaNn) |
|---|
Possible Gene Pairings (Gametes) | aN | an | AN | AaNN | AaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Normal Het Albino (AaNN) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANN | Normal Het Albino | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 50% | 1 | AaNn | Double Het for Albino & Anery | 50% |
- 18. 66% Poss. DH x Albino 66% Poss. Het Anery - Normal proves to be a Normal, and Albino proves to not be Het Anery:
| Normal (AA) x Albino (aa) |
|---|
Possible Gene Pairings (Gametes) | a | a | A | Aa | Aa |
|---|
| A | Aa | Aa |
|---|
- Result Totals (for every 4 offspring):
- (4) Normal Het Albino (Aa) (100% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 4 | Aa | Normal Het Albino | 4 | Normal Het Albino | 100% |
- 19. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Double Het, Anery proves to be Het Albino:
| DH Sharp Snow (Albino & Anery - AaNn) x Anery Het Sharp Albino (Aann) |
|---|
Possible Gene Pairings (Gametes) | An | an | AN | AANn | AaNn |
|---|
An | AAnn | Aann |
|---|
aN | AaNn | aaNn |
|---|
an | Aann | aann |
|---|
- Result Totals (for every 8 offspring):
- (1) Snow (aann) (12.5% of litter)
- (1) Albino Het for Anery (aaNn) (12.5% of litter)
- (2) Anery Het for Albino (Aann) (25% of litter)
- (1) Anery (AAnn) (12.5% of litter)
- (2) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Anery (AANn) (12.5% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANn | Normal Het for Anery | 3 | Normal 66% Possible DH Snow (Albino and Anery) | 12.5% | 2 | AANn | Double Het for Albino & Anery | 25% | 1 | AAnn | Anery | 3 | Anery 66% Possible Het for Albino (Het Snow) | 12.5% | 2 | Aann | Anery and Het for Albino | 25% | 1 | aaNn | Albino Het for Anery | 1 | Albino Het for Anery (Het Snow) | 12.5% | 1 | aann | Albino and Anery | 1 | Snow | 12.5% |
- 20. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Double Het, Anery does not prove to be Het Albino:
| DH Sharp Snow (Albino & Anery - AaNn) x Anery (AAnn) |
|---|
Possible Gene Pairings (Gametes) | An | AN | AANn |
|---|
| An | AAnn |
|---|
| aN | AaNn |
|---|
an | Aann |
|---|
- Result Totals (for every 4 offspring):
- (1) Anery Het for Albino (Aann) (25% of litter)
- (1) Anery (AAnn) (25% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- (1) Het for Anery (AANn) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANn | Normal Het for Anery | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 25% | 1 | AaNn | Double Het for Albino & Anery | 25% | 1 | AANn | Anery | 2 | Anery 50% Possible Het for Albino (Het Snow) | 25% | 1 | Aann | Anery Het for Albino | 25% |
- 21. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Het Albino, Anery proves to be Het Albino:
| Het Sharp Albino (AaNN) x Anery Het Albino (Aann) |
|---|
Possible Gene Pairings (Gametes) | An | an | AN | AANn | AaNn |
|---|
| aN | AaNn | aaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Albino Het for Anery (aaNn) (25% of litter)
- (2) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Het for Anery (AANn) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANn | Normal Het for Anery | 3 | Normal 66% Possible DH Snow (Albino and Anery) | 25% | 2 | AaNn | Double Het for Albino & Anery | 50% | 1 | aaNN | Albino Het for Anery | 1 | Albino Het for Anery (Het Snow) | 25% |
- 22. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Het Albino, Anery does not prove to be Het Albino:
| Het Sharp Albino (AaNN) x Anery (AAnn) |
|---|
Possible Gene Pairings (Gametes) | An | AN | AANn |
|---|
aN | AaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Het for Anery (AANn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANn | Het for Anery | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 50% | 1 | AaNn | Double Het for Albino & Anery | 50% |
- 23. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Normal, Anery proves to be Het Albino:
| Normal (AANN) x Anery Het Albino (Aann) |
|---|
Possible Gene Pairings (Gametes) | An | an | AN | AANn | AaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- (1) Het for Anery (AANn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AANn | Het for Anery | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 50% | 1 | AaNn | Double Het for Albino & Anery | 50% |
- 24. 66% Poss. DH x Anery 66% Poss. Het Albino - Normal proves to be Normal, Anery does not prove to be Het Albino:
| Normal (NN) x Anery (nn) |
|---|
Possible Gene Pairings (Gametes) | n | n | | N | Nn | Nn |
|---|
N | Nn | Nn |
|---|
- Result Totals (for every 4 offspring):
- (4) Het for Anery (Nn) (100% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 4 | Nn | Het for Anery | 4 | Het for Anery | 100% |
- 25. 66% Poss. DH x Snow - Normal proves to be Double Het:
| DH Sharp Snow (Albino & Anery - AaNn) x Snow (aann) |
|---|
Possible Gene Pairings (Gametes) | an | AN | AaNn |
|---|
| An | Aann |
|---|
| aN | aaNn |
|---|
an | aann |
|---|
- Result Totals (for every 4 offspring):
- (1) Snow (aann) (25% of litter)
- (1) Albino Het Anery (aaNn) (25% of litter)
- (1) Anery Het Albino (Aann) (25% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNn | Double Het for Albino & Anery | 1 | Double Het for Albino & Anery (Snow) | 25% | 1 | Aann | Anery and Het Albino | 1 | Anery Het for Albino (Het Snow) | 25% | 1 | aaNn | Albino and Het Anery | 1 | Albino Het for Anery (Het Snow) | 25% | 1 | aann | Albino and Anery | 1 | Snow | 25% |
- 26. 66% Poss. DH x Snow - Normal proves to be Het Albino:
| Het Albino (AaNN) x Snow (aann) |
|---|
Possible Gene Pairings (Gametes) | an | AN | AaNn |
|---|
| aN | aaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Albino Het Anery (aaNn) (50% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNn | Double Het for Albino & Anery | 1 | Double Het for Albino & Anery (Snow) | 50% | 1 | aaNn | Albino and Het Anery | 1 | Albino Het for Anery (Het Snow) | 50% |
- 27. 66% Poss. DH x Snow - Normal proves to be Het Anery:
| Het Anery (AANn) x Snow (aann) |
|---|
Possible Gene Pairings (Gametes) | an | AN | AaNn |
|---|
| An | Aann |
|---|
- Result Totals (for every 2 offspring):
- (1) Anery Het Albino (Aann) (50% of litter)
- (1) Double Het for Sharp Snow (Anery and Albino) (AaNn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNn | Double Het for Albino & Anery | 1 | Double Het for Albino & Anery (Snow) | 50% | 1 | AaNn | Anery and Het Albino | 1 | Anery Het for Albino (Het Snow) | 50% |
- 28. 66% Poss. DH x Snow - Normal proves to be a Normal:
| Normal (AANN) x Snow (aann) |
|---|
Possible Gene Pairings (Gametes) | an | AN | AaNn |
|---|
- Result Totals for all offspring:
- Double Het for Sharp Snow (Anery and Albino) (AaNn) (100% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability | 1 | AaNn | Double Het for Albino & Anery | 1 | Double Het for Albino & Anery (Snow) | 100% |
Success! If you have been lucky enough to have a successful litter using a Normal 66% Possible Double Het (or two), congratulations! Now comes the fun part - figuring out exactly what kind of genes they might possess. Here are a few things to remember: Keep in mind that you need to have a rather large litter to truly identify the genes at work. For example, to create a Snow from a 66% Poss. Double Het x 66% Poss. Double Het breeding, you have a 1 in 16 chance of seeing a Snow in your litter (if both turn out to be DH's). So, if you only have a litter of 9 babies, but no snow, it doesn't necessarily mean that one or the other (or both) are not DH's. This just means that it might take another breeding, or two, or three to determine exactly what genes they possess. With 66% Possible Het breedings, the larger amount of babies, the greater sample, and the closer the results should be to the Punnett Square. Of course the easiest way to prove out a 66% Possible Double Het is to breed it to a "visible" morph that definitely possesses the same genes. For example, by breeding a 66% Possible Double Het to a Snow you will be able to tell the genes that the 66% Possible Double Het possesses by looking at the makeup of the litter (assuming a relatively decent size litter). If there are Snows in the litter, then you know it is a definite DH. If there are Albinos and Anerys in the litter, but no Snows, it's still a definite DH, you just didn't get lucky this time around with producing a Snow (this is highly unlikely though, since you have a 1 in 4 chance of producing a Snow with this breeding). If there are only Albinos and Normals in the litter, then the Possible DH is only Het for Albino. If there are only Anerys and Normals in the litter, then the Possible DH is only Het for Anery. Finally, if all you see is Normals in the litter (again, this is assuming a decent size litter), then unfortunately the Possible DH is only a Normal (but all of the babies are 100% definite DH for Snow). I have made the summary below to help you figure out exactly what genes you might be dealing with by looking at a litter of babies from a Possible DH (or two), assuming it was a decent size litter. You can also use this summary to determine what breedings you would need to try to produce a desired morph. Just match the # listed with the type of breeding that you did. You have a Snow in your litter - Congratulations you have a definite Double Het Snow! These potential breeding outcomes listed above have Snows in the litter: #1, #11, #19, and #25. You have Albinos AND Anerys in your litter, but no Snows - Congratulations you have a definite Double Het Snow, you just didn't get lucky this time, but hopefully next time! See above for outcomes with Snows in the litter. You have Albinos and Normal looking babies in your litter - These potential breeding outcomes listed above have only Albinos and Normals in the litter: #2, #5, #12, #13, #14, #21, and #26. You have Anerys and Normal looking babies in your litter - These potential breeding outcomes listed above have only Anerys and Normals in the litter: #3, #8, #15, #20, and #27. You have only Normal looking babies in your litter - These potential breeding outcomes listed above have only Normal looking babies in the litter: #4, #6, #7, #9, #10, #16, #17, #18, #22, #23, #24, and #28. | |
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