Inheritance Basics

Terminology

heterozygous (het.)- Two different alleles at a single locus.

Example: Heterozygous albino is Aa. This means the boa has one wild type gene (A) and one albino gene (a).

homozygous (homo.)- Two identical alleles at a single locus. Boas referred to as "supers" are homozygous. A super hypo has two hypo genes.

Example: Homozygous albino is aa. This means the boa has two albino genes (a).

wild type- The typical form of an organism as it most frequently appears in nature (i.e. a normal boa). Wild type boas have a normal phenotype and a normal genotype.

In genetics, the dominant gene is traditionally symbolized with a capital letter. The genotype of a heterozygous albino boa is displayed as Aa. This means one wild type gene (A) and one albino gene (a) since wild type is dominant over albino. A heterozygous hypomelanistic boa is displayed as Hh. This symbolizes one hypomelanistic gene (H) and one wild type gene (h) since hypomelanism is dominant over wild type.

The percentages below apply to all simple recessive, dominant, and co-dominant/incomplete dominant traits. You may substitute traits inherited in the same manner and use the same percentages below. For example, you can exchange albino with blood, or exchange motley with aztec.

Abbreviations

anerythristic- anery

hypomelanistic- hypo

double heterozygous (DH)- Heterozygous for two traits. For example, a boa that is het. albino and het. Type I anery is DH snow.

triple heterozygous (TH)- Heterozygous for three traits.

Punnett Square

Genetic outcomes can be derived using a Punnett square. The example is a breeding between a het. albino (Aa) and a het. albino (Aa). Each parent has the same genotype (Aa). This means each parent has one wild type gene (A) and one albino gene (a). Each baby will receive one gene from each parent. The possible genotypes are shown in the example.

By breeding a heterozygous albino boa to another heterozygous albino boa, the litter should yield the following:

25% albino (aa)

50% het. albino (Aa)

25% wild type (AA)

The wild type and heterozygous albino boas will all have the same wild-type phenotype, but they will have differing genotypes. Since they are indistinguishable in appearance, all the wild-type phenotypes from this breeding are referred to as "66% possible heterozygous albino" since 2 in every 3 (or 66.6%) should be heterozygous albino.  

How to read chart

EXAMPLE:

albino x hypo (het.)   

50% hypo het. albino (DH sunglow)    

50% het. albino

The first line (bold and underlined) details the genetics of the breeding pair. It does not matter which is female (dam) and which is male (sire).

The following lines (not bold or underlined) show the scientific probability for the offspring. In this example, 50% of the babies should be hypo het. albino. The other 50% should be wild type het. for albino.

Outcomes

Albino breeding

(applies to Kahl strain and Sharp strain albinos)

 

albino x albino

100% albinos

 

anery x albino

100% het. albino and anery (DH snow)

arabesque (het.) x albino

50% arabesque het. albino

50% het. albino

 

arabesque (homo.) x albino

100% arabesque het. albino

 

hypo (het.) x albino

50% hypos het. albino (DH sunglow)

50% het. albino

 

hypo (homo.) x albino

100% hypo het. albino (DH sunglow)

 

jungle (het.) x albino

50% jungle het. albino

50% het. albino

jungle (homo.) x albino

100% jungle het. albino

motley (het.) x albino

50% motley het. albino

50% het. albino

 

motley (homo.) x albino

100% motley het. albino

 

wild type x albino

100% het. albino

 

 

 

Het. Albino breeding

(applies to Kahl strain and Sharp strain albinos)

 

albino x het. albino

50% albino

50% het. albino

het. albino x het. albino

25% albino

50% het. albino

25% wild type

 

anery x het. albino

50% het. anery and albino (DH snow)

50% het. anery

 

het. anery x het. albino

25% het. anery and albino (DH snow)

25% het. albino

25% het. anery

25% wild type

 

arabesque (het.) x het. albino

25% arabesque het. albino

25% arabesque

25% het. albino

25% wild type

 

arabesque (homo.) x het. albino

50% arabesque het. albino

50% arabesque

 

hypo (het.) x het. albino

25% hypos het. albino (DH sunglow)

25% hypos

25% het. albino

25% wild type

 

hypo (homo.) x het. albino

50% hypo het. albino (DH sunglow)

50% het. albino

 

jungle (het.) x het. albino

25% jungle het. albino

25% jungle

25% het. albino

25% wild type

 

jungle (homo.) x het. albino

50% jungle het. albino

50% jungle

 

motley (het.) x het. albino

25% motley het. albino

25% motley

25% het. albino

25% wild type

 

motley (homo.) x het. albino

50% motley het. albino

50% motley

 

wild type x het. albino

50% het. albino

50% wild type

   

 

Anerythristic Breeding

(applies to Type I and Type II anerys)

 

albino x anery

100% het. anery and albino

(DH snow Type I or DH blizzard Type II)

anery x anery

100% anery

arabesque (het.) x anery

50% arabesque het. anery

50% het. anery

 

arabesque (homo.) x anery

100% arabesque het. anery

 

hypo (het.) x anery

50% hypos het. anery (DH ghost)

50% het. anery

 

hypo (homo.) x anery

100% hypo het. anery (DH ghost)

 

jungle (het.) x anery

50% jungle het. anery

50% het. anery

jungle (homo.) x anery

100% jungle het. anery

motley x anery

50% motley het. anery

50% het. anery

 

motley (homo.) x anery

100% motley het. anery

wild type x anery

100% het. anery

 

 

 

Het. Anerythristic breeding

(applies to Type I and Type II anerys)

 

albino x het. anery

50% het albino and anery (DH snow)

50% het. albino

het. albino x het. anery

25% het. anery and albino (DH snow)

25% het. albino

25% het. anery

25% wild type

 

anery x het. anery

50% anery

50% het. anery

 

het. anery x het. anery

25% anery

50% het. anery

25% wild type

 

arabesque (het.) x het. anery

25% arabesque het. anery

25% arabesque

25% het. anery

25% wild type

 

arabesque (homo.) x het. anery

50% arabesque het. anery

50% arabesque

 

hypo (het.) x het. anery

25% hypos het. anery (DH ghost)

25% hypos

25% het. anery

25% wild type

 

hypo (homo.) x het. anery

50% hypo het. anery (DH ghost)

50% hypo

 

jungle (het.) x het. anery

25% jungle het. anery

25% jungle

25% het. anery

25% wild type

 

jungle (homo.) x het. anery

50% jungle het. anery

50% jungle

 

motley (het.) x het. anery

25% motley het. anery

25% motley

25% het. anery

25% wild type

 

motley (homo.) x het. anery

50% motley het. anery

50% motley

 

wild type x het. anery

50% het. anery

50% wild type

 

   

Double Recessive Trait Breeding

het. albino and anery (DH snow) x het. albino and anery (DH snow)

6.25% snow

12.5% albino het. anery

12.5% anery het. albino

6.25% albino

6.25% anery

25% het. albino and anery (DH snow)

12.5% het. albino

12.5% het. anery

6.5% wild type

 

albino het. anery x het. albino and anery (DH snow)

12.5% snow

25% albino het. anery

12.5% anery het. albino

12.5% albino

25% het. albino and anery (DH snow)

12.5% het. albino

albino het. anery x albino het. anery

25% snow

50% albino het. anery

25% albino

 

 

albino het. anery x anery het. albino

25% snow

25% albino het. anery

25% anery het. albino

25% het. albino and anery (DH snow)

anery het. albino x het. albino and anery (DH snow)

12.5% snow

25% anery het. albino

12.5% albino het. anery

12.5% anery

25% het. albino and anery (DH snow)

12.5% het. anery

 

anery het. albino x anery het. albino

25% snow

50% anery het. albino

25% anery

snow (albino and anery) x het. albino and anery (DH snow)

25% snow

25% albino het. anery

25% anery het. albino

25% het. albino and anery (DH snow)

 

snow (albino and anery) x albino het. anery

50% snow

50% albino het. anery

 

snow (albino and anery) x anery het. albino

50% snow

50% anery het. albino

 

snow (albino and anery) x snow (albino and anery)

100% snow

 

Triple Heterozygous Recessive Trait Breeding

het. albino het. anery het. blood x het. albino het. anery het. blood

1.5625% albino anery blood

3.125% albino anery het. blood

1.5625% albino anery (snow)

3.125% albino blood het. anery

1.5625% albino blood

6.25% albino het. anery het. blood

3.125% albino het. anery

3.125% albino het. blood

1.5625% albino

3.125% anery blood het. albino

1.5625% anery blood

6.25% anery het. albino het. blood

3.125 % anery het. albino

3.125% anery het. blood

1.5625% anery

6.25% blood het. albino het. anery

3.125% blood het. albino

3.125% blood het. anery

1.5625% blood

6.25% het, albino het. anery (DH snow)

6.25% het. albino het. blood

6.25% het. anery het blood

3.125% het. albino

3.125% het. anery

3.125% het. blood

12.5% het. albino het. anery het. blood (TH)

1.5625% wild type

Arabesque Breeding

albino x arabesque (het.)

50% arabesque het. albino

50% het. albino

 

albino x arabesque (homo.)

100% arabesque het. albino

 

anery x arabesque (het.)

50% arabesque het. anery

50% het. anery

 

anery x arabesque (homo.)

100% arabesque het. anery

 

arabesque (het). x arabesque (het.)

 

25% arabesque (homo.)

50% arabesque

25% wild type

 

arabesque (homo). x arabesque (het.)

 

50% arabesque (homo.)

50% arabesque

 

arabesque (homo) x arabesque (homo)

 

100% arabesque (homo.)

 

 

hypo (het.) x arabesque (het.)

25% hypo arabesque

25% arabesque

25% hypo

25% wild type

 

hypo (homo.) x arabesque (het.)

50% hypo arabesque

50% hypo

 

hypo (het.) x arabesque (homo.)

50% hypo arabesque

50% arabesque

hypo (homo.) x arabesque (homo.)

100% hypo arabesque

jungle (het.) x arabesque (het.)

25% jungle arabesque

25% jungle

25% arabesque

25% wild type

 

jungle (homo.) x arabesque (het.)

50% jungle arabesque

50% jungle

jungle (het.) x arabesque (homo.)

50% jungle arabesque

50% arabesque

 

jungle (homo.) x arabesque (homo.)

100% jungle arabesque

 

 

motley (het.) x arabesque (het.)

25% motley arabesque

25% motley

25% arabesque

25% wild type

 

motley (homo.) x arabesque (het.)

50% motley arabesque

50% motley

 

 

motley (het.) x arabesque (homo.)

50% motley arabesque

50% arabesque

 

 

motley (homo.) x arabesque (homo.)

100% motley arabesque

 

 

 

wild type x arabesque (het.)

50% arabesque

50% wild type

wild type x arabesque (homo.)

100% arabesque

 

 

Jungle Breeding

anery x jungle (het.)

50% jungle het. anery

50% het. anery

anery x jungle (homo.)

100% jungle het. anery

 

albino x jungle (het.)

50% jungle het. albino

50% het. albino

 

albino x arabesque (homo.)

100% jungle het. albino

 

 

arabesque (het.) x jungle (het.)

 

25% jungle arabesque

25% arabesque

25% jungle

25% wild type

 

arabesque (homo.) x jungle (het.)

50% jungle arabesque

50% arabesque

 

arabesque (het.) x jungle (homo.)

50% jungle arabesque

50% jungle

 

arabesque (homo.) x jungle (homo.)

100% jungle arabesque

 

hypo (het.) x jungle (het.)

25% hypo jungle

25% jungle

25% hypo

25% wild type

hypo (homo.) x jungle (het.)

50% hypo jungle

50% hypo

 

hypo (het.) x jungle (homo.)

50% hypo jungle

50% jungle

 

hypo (homo.) x jungle (homo.)

100% hypo jungle

 

jungle (het.) x jungle (het.)

25% super jungle (homo.)

50% jungle

25% wild type

 

jungle (homo.) x jungle (het.)

50% super jungle (homo.)

50% jungle

jungle (homo.) x jungle (homo.)

100% super jungle (homo.)

 

motley (het.) x jungle (het.)

25% motley jungle

25% motley

25% jungle

25% wild type

 

motley (homo.) x jungle (het.)

50% motley jungle

50% motley

 

motley (het.) x jungle (homo.)

50% motley jungle

50% jungle

motley (homo.) x jungle (homo.)

100% motley jungle

 

wild type x jungle (het.)

50% jungle

50% wild type

wild type x jungle (homo.)

100% jungle

 

 

Motley Breeding

anery x motley (het.)

50% motley het. anery

50% het. anery

anery x motley (homo.)

100% motley het. anery

 

albino x motley (het.)

50% motley het. albino

50% het. albino

 

albino x motley (homo.)

100% motley het. albino

 

 

arabesque (het.) x motley (het.)

 

25% motley arabesque

25% motley

25% arabesque

25% wild type

 

arabesque (homo.) x motley (het.)

50% arabesque motley

50% arabesque

 

arabesque (het.) x motley (homo.)

50% arabesque motley

50% motley

 

arabesque (homo.) x motley (homo.)

100% motley arabesque

 

hypo (het.) x motley (het.)

25% hypo motley

25% motley

25% hypo

25% wild type

 

hypo (homo.) x motley (het.)

50% hypo motley

50% hypo

 

hypo (het.) x motley (homo.)

50% hypo motley

50% motley

 

hypo (homo.) x motley (homo.)

100% hypo motley

 

jungle (het.) x motley (het.)

25% jungle motley

25% jungle

25% motley

25% wild type

 

jungle (het.) x motley (homo.)

50% jungle motley

50% motley

jungle (homo.) x motley (het.)

50% jungle motley

50% jungle

 

jungle (homo.) x motley (homo.)

100% jungle motley

 

motley (het.) x jungle (het.)

25% motley jungle

25% motley

25% jungle

25% wild type

 

motley (homo.) x motley (het.)

50% super motley (homo.)

50% motley

 

 

motley (homo.) x motley (homo.)

100% super motley (homo.)

 

 

wild type x motley (het.)

50% motley

50% wild type

 

 

wild type x motley (homo.)

100% motley

 

 

Paradigm Breeding

(Sharp albino and Boawoman hypo genes)

 

Sharp x Boawoman

100% Paradigms

 

paradigm x Sharp

50% Sharp albino

50% paradigm

paradigm x Boawoman

50% paradigm

50% Boawoman

 

paradigm x het. Sharp

25% Sharp albino

25% het. Sharp albino

25% paradigm

25% het. Boawoman

 

paradigm x het. Boawoman

25% Boawoman

25% het. Boawoman

25% paradigm

25% het. Sharp albino

 

het. Sharp x het. Boawoman

25% paradigm

25% het. Sharp albino

25% Boawoman

25% wild type

 

paradigm x paradigm

50% paradigm

25% Sharp albino

25% Boawoman

 

Sharp x het. Boawoman

50% paradigm

50% het. Sharp albino

Boawoman x het. Sharp

50% paradigm

50% het. Boawoman

paradigm x wild type

50% het. Sharp albino

50% het. Boawoman

 

 

 

 

Some interesting notes on paradigm genetics:

 

One of the most interesting aspects of this morph is that you produce more Paradigms from a Sharp X Boawoman breeding than from a Paradigm X Paradigm breeding. Also, there cannot be a Boawoman het. Sharp or a Sharp het. Boawoman. Any boa with both genes is a Paradigm.

Here is the math for a Paradigm x Paradigm:
Sire can pass Sharp (a) or Boawoman (b).
Dam can pass Sharp (a) or Boawoman (b).

Your outcomes:
25% aa (Sharp albino)
25% bb (Boawoman)
50% ab (Paradigms)

Now, in a Sharp x Boawoman breeding:
Sire can pass Sharp (a) or (a).
Dam can pass Boawoman (b) or (b).

Your outcomes:
100% Paradigm (ab)

 

If you would like more information or if you have questions, please contact us.

info@gossreptiles.com

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