Possible Litter Outcomes From Breeding Co-dominant Boas
 

 

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%
 
All images and content © Blumen Boas, unless otherwise noted. All rights reserved.