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Boa genetics 101 doc, review #2

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Posted by: rainbowsrus at Thu Apr 20 11:49:47 2006   [ Email Message ] [ Show All Posts by rainbowsrus ]  
   

Thanks to all the posted suggestions in review #1 thread. I think I've gotten most of the suggestions in. Sorry for whatever I may have missed. Please review again and let me know what I may be missing.

Terms:

Mutant gene = any gene that is different from the corresponding normal gene. Not necessarily a visual mutation.

Het = heterozygous = having two different genes within a gene pair. Most commonly one normal and one mutant but could be two different mutant genes.

Homo = Homozygous = having both genes within a gene pair the same. Can be normal or mutant.

Super = slang term commonly used for Homo dominant mutant gene pair.

Trait = Physical appearance that it distinguishable from normal.

Recessive = Trait is only expressed when the gene pair is Homo for the specific mutant gene.

Dominant = Trait is expressed when the gene pair is Het or Homo for the specific mutant gene. Het and Homo specimens are not 100% distinguishable from each other. Note, in some Dominant traits some of the specimens can be visually identified as Het or Homo.

Codominant = Similar to Dominant except the Homo specimen will have a 100% distinguishable appearance from a Het specimen.

Double Het = has two gene pairs where one gene in each pair is normal and the second gene is a mutant gene. Ie double Het for snow would have a normal gene paired with an albino gene and a normal gene paired with an anerythristic gene.

Triple Het = same as double Het except applies to three gene pairs.



Color mutations in boas:

Albino/Amelanistic (Tyrosinase negative): Recessive - a lack of melanin (black pigmentation) Kahl and Sharp strains.

Anerythristic - Recessive - a lack ______ (red pigmentation) two known strains (type I and type II)

Hypomelanistic - Hypo - Dominant - a reduction in the black pigmentation

Caramel Albino (Tyrosinase positive) : Recessive - Colombian and Nicaraguan strains

Caramel Hypo (Boawoman Hypo)-recessive-a Hypomelanistic trait with similarities to Colombian T-plus Albinos and Pastels.

Pastel - Polygenic - A line of boas selectively bred for less than normal black pigment, not related to a single gene pair.

Blood - Recessive - A Hypererythristic mutation.


Named Color mutation combinations:

Ghost – homozygous anerythristic / heterozygous hypomelanistic
Super Ghost - homozygous anerythristic / homozygous hypomelanistic
Snow – homozygous anerythristic / homozygous albino
Sunglow – homozygous albino / heterozygous hypomelanistic
Super Sunglow - homozygous albino / heterozygous hypomelanistic
Bloody Salmon – homozygous blood / heterozygous hypomelanistic
Moonglow – homozygous anerythristic / homozygous albino / heterozygous hypomelanistic
Super Moonglow – homozygous anerythristic / homozygous albino / homozygous hypomelanistic
Pewter - homozygous type II anerythristic / homozygous blood
Caramel Hypo (Boawoman hypo)- ??????

Locale Related Color Mutations:
Sunset – homozygous hypomelanistic having 50% Hog Island Boa blood
Salmontine – heterozygous hypomelanistic having 50% Argentine Boa blood


Pattern Mutations:
Arabesque – Dominant?
Jungle – Codominant - Originally identified in Sweden,
Motley – Codominant
Stripe – Recessive
Reverse Stripe – Recessive?
Leopard – Recessive - dark color, a mix of underlying tones and marbled pattern.
European Squaretail - Recessive - long list of variable characteristics.
Scoria - Recessive? - Pink pattern-less with two parallel lines down back.
Aztec - Dominant?
Gray pattern-less - unknown
-----
Thanks,

Dave "Rainbows-R-Us"

0.1 Wife (WC)
0.2 kids (CBB)
2.7 Brazilian Rainbow Boa (adult breeders)
2.5 Brazilian Rainbow Boa (sub-adult from 2004)
4.8 Brazilian Rainbow Boa (sub-adult from 2005)
2.1 Hypomelanistic BRB
0.1 Het for Hypomelanistic BRB
0.1 BCI "Elvira" normal from 1989
1.0 BCI albino / het-anery
0.1 BCI Hypo / het-albino
0.1 BCI Anery / het-albino
0.1 BCI Hypo (possible super)
1.0 BCI albino het stripe
1.0 BCI salmon hypo
0.1 BCI ghost

lots.lots.lots feeder mice and rats


   

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>> Next Message:  BTW, could use better descriptions.... - rainbowsrus, Thu Apr 20 11:51:25 2006
>> Next Message:  my attempt to be more specific-arabasque - NUCCIZ_BOAS, Thu Apr 20 12:34:11 2006
>> Next Message:  RE: Boa genetics 101 doc, review #2 - Paul Hollander, Thu Apr 20 15:43:25 2006
>> Next Message:  What about... - michaelburton, Thu Apr 20 18:41:53 2006
>> Next Message:  Boa genetics 101 doc, suggestions - Paul Hollander, Sat Apr 22 12:56:16 2006