Ritchie Luna said:
My "GEANS" are a little rusty. So bear with me.
Did you know That Salmon boas are a codom trait?
Did you know that Ivories are a codom trait? (incomplete?)
These alleles at the Salmon locus:
S<sup>+</sup> = Wild-type at Salmon locus
S<sup>S</sup> = Salmon mutant at Salmon locus
Can be paired in three different ways:
S<sup>+</sup>·S<sup>+</sup> = Wild-type
S<sup>+</sup>·S<sup>S</sup> = Salmon
S<sup>S</sup>·S<sup>S</sup> = "Super" Salmon
Did you know you put two salmon boas together you get a super salmon.
FYI:
S<sup>+</sup>·S<sup>S</sup> X S<sup>+</sup>·S<sup>S</sup> is calculated with the same Punnett square as any other het to identical het single-locus cross, whether the mutant is dominant, codominant, or recessive, which looks like this:
<table border=1><tr><td> </td><td align=right>S<sup>+</sup></td><td align=right>S<sup>S</sup></td></tr><tr><td>S<sup>+</sup></td><td>S<sup>+</sup>·S<sup>+</sup></td><td>S<sup>+</sup>·S<sup>S</sup></td></tr><tr><td>S<sup>S</sup></td><td>S<sup>S</sup>·S<sup>+</sup></td><td>S<sup>S</sup>·S<sup>S</sup></td></tr></table>
Notice that it produces normals, salmons, and "super" salmons. If you put two salmons together, you not only get "supers," you also get normals, as well as salmons.
Did you know that salmon boas can really be called "het for super salmon"?
They are really heterozygous at the salmon locus for the salmon and wild-type alleles. All hets are het for two alleles at a locus. (Wild-type is generally assumed, just like "you" is the assumed subject in the sentence "go!") They are not "het for super salmon" any more than a het for albino is "het for being homozygous for albino."
Did you know you put two "het ivorys" together you get an ivory?
The same applies here. Just replace "S" with "I" and you have the same situation. Crossing two identical heterozygotes produces 3 resulting genotypes. It does not necessarily produce an Ivory.
Did you know that the sibling of salmons are nothing more that normals?
Did you know that the sibling of "het ivories" are nothing more than normals?
Absolutely 100% true. Since the mutant allele is codominant, if the snake looks normal, the gene is not present, end of story. (Except in cases where there are cryptic hets, LOL.)
Ivory ball = Super Salmon Boa
Het Ivory ball = Salmon boa = "het super slamon" boa
sibling to a het ivory = sibling to a salmon = normal.
Again, right on the money.
If it looks normal, it ain't carrying a codominant or dominant mutant. "Sibling to" is irrelevant in the world of single-locus on/off traits, and is not used by anyone who understands what is going on, unless they are trying to overprice something.
