Quote Originally Posted by MarkS View Post
Actually the very first female banana was a wild caught animal that was sold to Will Slough by Noah as some kind of caramel albino. (going by looks as it had never yet been bred) The first breeding was the female banana to a male clown. It was a surprise to see baby bananas in the hatch since the female was assumed to be a caramel albino (there were either 4 or 5 bananas, I can't remember exactly somewhere I've got a picture of the original clutch but I haven't been able to find it for years, Will had posted the picture on Kingsnake.com). All of the baby bananas were female. I have a friend who drove from California to Chicago to buy one and he sexed all of the bananas hoping for a male, but no luck. He did end up buying one of the females though. I believe that the next year the female was bred she produced all slugs and the next time she had good eggs she once again produced all female bananas, I kind of lost track of it after that so I don't know what else happened from that point on. I believe that somewhere in there Will sold off his collection but I'm not certain who picked them up.
I have worked with Z chromosome-linked mutant genes in pigeons and ringneck doves.

If banana/coral glow was a routine type of Z linked recessive mutant, then a b/cg female mated to a normal male would produce normal females and normal looking, het b/cg males. So b/cg is not recessive to the normal version of the gene.

If banana/coral glow was a routine type of Z linked dominant mutant, then a b/cg female mated to a normal male would produce normal females and b/cg males.

Whatever is going on in the chromosomes seems pretty weird to me. I still have to look at that fish paper, though.