Reptile & Amphibian Forums

I used to be into boas when I was a kid but got out of them for a long time. Now I'm REALLY getting back into them. And I'm noticing that alot of just "normal" Colombians are very hard to distinguish from anerys, type I or II. So, I'm questioning what specific characteristics make an animal anerytheristic? There are many animals that just don't have red in them. Is it only determined through breeding if the trait the adult has passes on to some of the offspring, then it's considered a gene carried by the animal in question and it's offspring, which then establshes a bloodline? Or is there another way that an animal can be branded anery without knowing it's background or genetic makeup? Just curious.

but I'd still appreciate any feedback or someone to verify. Thanks.

At the number of people that have trouble identifying this trait. Quite often I see animals posted as anerythristics,which clearly are NOT,and,simply put,I don't understand it. Anerythrism is one of those mutations that is pretty cut,and,dried...a true anerythristic animal lacks the neccessary biochemical components to produce the color "red",this,by obvious deduction includes the various secondary colors that would result from any combination involving erythristic chromataphores.A true anerythristic animal also typically passes this biochemical anomoly in a simple reccessive manner when bred,producing essentially "normal" looking heterozygotes for the same condition. prior to proof of genetic transmission,any boa that appears anerythristic should be called "possible",or,"unproven" anerythristic,to be accurate,and,honest.(IMHO)