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 breeding a Co-dominant boa (a Motley, a Jungle, a Hypo, etc.) with the boas that I have available for sale. When you view the results below, replace the word "Co-dom" with the type of Co-dominant boa (for example, a Co-dom Het Albino could mean Jungle Het Albino or Motley Het Albino, etc.). 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.
Key of Alleles:
C - Normal allele for Co-dom production
c - Co-dominant allele for Co-dom
A - Normal allele for melanin production
a - Recessive allele for albinism
N - Normal allele for erythrin production
n - recessive allele for anerytherism
- 1. Co-dom x Normal:
| Co-dom (Cc) x Normal (CC) |
|---|
Possible Gene Pairings (Gametes) | C | C |
C | CC | CC |
|---|
c | Cc | Cc |
|---|
- Result Totals (for every 4 offspring):
- (2) Co-doms (Cc) (50% of litter)
- (2) Normals (CC) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
2 | CC | Normal | 2 | Normal | 50% |
2 | Cc | Co-dom | 2 | Co-dom | 50% |
- 2. Co-dom x DH Sharp Snow:
| Co-dom (CcAANN) x DH Sharp Snow (CCAaNn) |
|---|
Possible Gene Pairings (Gametes) | CAN | CAn | CaN | Can |
CAN | CCAANN | CCAANn | CCAaNN | CCAaNn |
|---|
cAN | CcAANN | CcAANn | CcAaNN | CcAaNn |
|---|
- Result Totals (for every 8 offspring):
- (1) Co-dom Double Het for Sharp Snow (Anery and Albino) (CcAaNn) (12.5% of litter)
- (1) Co-dom Het Albino (CcAaNN) (12.5% of litter)
- (1) Co-dom Het Anery (CcAANn) (12.5% of litter)
- (1) Co-dom (CcAANN) (12.5% of litter)
- (1) Normal Double Het for Sharp Snow (Anery and Albino) (CCAaNn) (12.5% of litter)
- (1) Normal Het for Albino (CCAaNN) (12.5% of litter)
- (1) Normal Het for Anery (CCAANn) (12.5% of litter)
- (1) Normal (CCAANN) (12.5% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCAANN | Normal | 4 | Normal 66% Possible DH Snow (Albino and Anery) OR 25% Poss. DH, 25% Poss. Het for Albino, and 25% Poss. Het for Anery | 12.5% |
1 | CCAANn | Normal Het for Anery | 12.5% |
1 | CCAaNN | Normal Het for Albino | 12.5% |
1 | CCAaNn | Double Het for Albino & Anery | 12.5% |
1 | CcAANN | Co-dom | 4 | Co-dom 66% Possible DH Snow (Albino and Anery) OR 25% Poss. DH, 25% Poss. Het for Albino, and 25% Poss. Het for Anery | 12.5% |
1 | CcAANn | Co-dom Het Anery | 12.5% |
1 | CcAaNN | Co-dom Het Albino | 12.5% |
1 | CcAaNn | Co-dom Double Het for Albino & Anery | 12.5% |
- 3. Co-dom x Anery:
| Co-dom (CcNN) x Anery (CCnn) |
|---|
Possible Gene Pairings (Gametes) | Cn |
CN | CCNn |
|---|
cN | CcNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Co-dom Het Anery (CcNn) (50% of litter)
- (1) Normal Het Anery (CCNn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCNn | Normal Het for Anery | 1 | Normal Het Anery | 50% |
1 | CcNn | Co-dom Het for Anery | 1 | Co-dom Het Anery | 50% |
- 4. Co-dom x Anery Het Albino:
| Co-dom (CcAANN) x Anery Het Albino (CCAann) |
|---|
Possible Gene Pairings (Gametes) | CAn | Can |
CAN | CCAANn | CCAaNn |
|---|
cAN | CcAANn | CcAaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Co-dom Double Het for Sharp Snow (Anery and Albino) (CcAaNn) (25% of litter)
- (1) Co-dom Het for Anery (CcAANn) (25% of litter)
- (1) Normal Double Het for Sharp Snow (Anery and Albino) (CCAaNn) (25% of litter)
- (1) Normal Het Anery (CCAANn) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCAANn | Normal Het for Anery | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 25% |
1 | CCAaNn | Double Het for Albino & Anery | 25% |
1 | CcAANn | Co-dom Het for Anery | 2 | Co-dom 50% Possible DH Snow (Albino and Anery) | 25% |
1 | CcAaNn | Co-dom Double Het for Albino & Anery | 25% |
- 5. Co-dom x Sharp Albino:
| Co-dom (CcNN) x Sharp Albino (CCaa) |
|---|
Possible Gene Pairings (Gametes) | Ca |
CN | CCNa |
|---|
cN | CcNa |
|---|
- Result Totals (for every 2 offspring):
- (1) Co-dom Het Albino (CcNa) (50% of litter)
- (1) Normal Het Albino (CCNa) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCNa | Normal Het for Albino | 1 | Normal Het Albino | 50% |
1 | CcNa | Co-dom Het for Albino | 1 | Co-dom Het Albino | 50% |
- 6. Co-dom x Albino Het Anery:
| Co-dom (CcAANN) x Albino Het Anery (CCaaNn) |
|---|
Possible Gene Pairings (Gametes) | MaN | Man |
CAN | CCAaNN | CCAaNn |
|---|
cAN | CcAaNN | CcAaNn |
|---|
- Result Totals (for every 4 offspring):
- (1) Co-dom Double Het for Sharp Snow (Anery and Albino) (CcAaNn) (25% of litter)
- (1) Co-dom Het for Albino (CcAaNN) (25% of litter)
- (1) Normal Double Het for Sharp Snow (Anery and Albino) (CCAaNn) (25% of litter)
- (1) Normal Het Albino (CCAaNN) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCAaNN | Normal Het for Albino | 2 | Normal 50% Possible DH Snow (Albino and Anery) | 25% |
1 | CCAaNn | Double Het for Albino & Anery | 25% |
1 | CcAaANN | Co-dom Het for Albino | 2 | Co-dom 50% Possible DH Snow (Albino and Anery) | 25% |
1 | CcAaNn | Co-dom Double Het for Albino & Anery | 25% |
- 7. Co-dom x Snow:
| Co-dom (CcAANN) x Snow (CCaann) |
|---|
Possible Gene Pairings (Gametes) | Man |
CAN | CCAaNn |
|---|
cAN | CcAaNn |
|---|
- Result Totals (for every 2 offspring):
- (1) Co-dom Double Het for Sharp Snow (Anery and Albino) (CcAaNn) (50% of litter)
- (1) Normal Double Het for Sharp Snow (Anery and Albino) (CCAaNn) (50% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CCAaNn | Double Het for Albino & Anery | 1 | Normal DH Snow (Albino and Anery) | 50% |
1 | CcAaNn | Co-dom Double Het for Albino & Anery | 1 | Co-dom DH Snow (Albino and Anery) | 50% |
- 8. Co-dom x Co-dom:
| Co-dom (Cc) x Co-dom (Cc) |
|---|
Possible Gene Pairings (Gametes) | C | c |
C | CC | Cc |
|---|
c | Cc | cc |
|---|
- Result Totals (for every 4 offspring):
- (1) Super Co-dom (cc) (25% of litter)
- (2) Co-doms (Cc) (50% of litter)
- (1) Normal (CC) (25% of litter)
- Detail of Result Totals:
Genotypic Ratio of Possible Offspring | Genotype | Phenotypic Ratio of Possible Offspring | Phenotype | Probability |
1 | CC | Normal | 1 | Normal | 25% |
2 | Cc | Co-dom | 2 | Co-dom | 50% |
1 | cc | Super Co-dom | 1 | Super Co-dom | 25% |
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