3rd litter born today- 25 big healthy babies

[Jeff B]

The 3rd litter of the season for me was born today. Ended up with 25 perfect big babies and ZERO slugs or stillbornes. After having a bad year last year this season is going pretty darn good. Must have done something right this season. The dame was a T. radix (plains) het axanthic (one of her parents was axanthic so she had a 50% possibility of being het axanthic or het anerythristic). The sire was an axanthic visual (so being co-allelic he carries one copy axanthic and one copy anerythristic).This means the sire would have to donate either a copy of axanthic gene OR a copy of anerythristic gene. About half the babies born are axanthic and the other half are normal phenotype. Thus proving out that the female is in fact het axanthic (or she carries one copy of the axanthic gene). This also means that all the normal looking babies are 100% het anerythristic. If the dame would have been het anerythristic half the babies would have been anerythristic and the other half would have been normals het axanthic. Hope I didn't confuse anyone.

[Eddie]

Awesome! You were do for a good season.

[Jeff B]

Awesome! You were do for a good season.

Thanks Ed. You know I took a lot of flack last year and in fact I took a lot of flack right up to last week. Last year was a bad year with a lot of stills for whatever reason for me and then to have to listen to all the crap on top of it, was just adding insult to injury. Hope these litters continue. Can't wait to see how the rest of the week pans out at this rate. My florida albino and het albino that I got from you (was it 2 or 3 years ago?) are looking plump. They were both bred to my 4 het pieds rotating for a month.

[guidofatherof5]

You lost me but it doesn't matter. Awesome radix scrubs.

[Jeff B]

You lost me but it doesn't matter. Awesome radix scrubs.

Sorry Steve, I was afraid that might be confusing, co-allelic is a somewhat complicated situation and maybe I didn't explain it as well as I hoped. Read it again tomorrow and hopefully it soaks in while you sleep tonight and will make sense tomorrow Maybe think of it this way axanthic and anerythristic exist at the same location and only two copies can exist at one location.
Lets label axanthic allele=x and label anerythristic allele=n X and N represent their respective wild type alleles
xn=axanthic phenotype (looks black and blue)
nn=anerythristic phenotype (looks black and gray)
xx=normal or axanthic or lethal, not completely sure yet
Xx=normal phenotype (looks normal) but het axathic
Nn=normal phenotype (looks normal) but het anerythristic
Hope this helps

[guidofatherof5]

Sorry Steve, I was afraid that might be confusing, co-allelic is a somewhat complicated situation and maybe I didn't explain it as well as I hoped. Read it again tomorrow and hopefully it soaks in while you sleep tonight and will make sense tomorrow Maybe think of it this way axanthic and anerythristic exist at the same location and only two copies can exist at one location.
Lets label axanthic allele=x and label anerythristic allele=n X and N represent their respective wild type alleles
xn=axanthic phenotype (looks black and blue)
nn=anerythristic phenotype (looks black and gray)
xx=normal or axanthic or lethal, not completely sure yet
Xx=normal phenotype (looks normal) but het axathic
Nn=normal phenotype (looks normal) but het anerythristic
Hope this helps

It does, Thanks

[chris-uk]

Sorry Steve, I was afraid that might be confusing, co-allelic is a somewhat complicated situation and maybe I didn't explain it as well as I hoped. Read it again tomorrow and hopefully it soaks in while you sleep tonight and will make sense tomorrow Maybe think of it this way axanthic and anerythristic exist at the same location and only two copies can exist at one location.
Lets label axanthic allele=x and label anerythristic allele=n X and N represent their respective wild type alleles
xn=axanthic phenotype (looks black and blue)
nn=anerythristic phenotype (looks black and gray)
xx=normal or axanthic or lethal, not completely sure yet
Xx=normal phenotype (looks normal) but het axathic
Nn=normal phenotype (looks normal) but het anerythristi
Hope this helps

Nice explanation.
So anerythristic and axanthic are both recessive, and when both genes are present it is the axanthic trait that is expressed.

[Jeff B]

Nice explanation.
So anerythristic and axanthic are both recessive, and when both genes are present it is the axanthic trait that is expressed.

We know anerythristic is a simple recessive, that has been well characterized. Which means that one copy of the anerythristic gene is dominated by the wild type counterpart or respective wild type allele. It appears that anerythristic and the axanthic gene are co-dominant to each other which when one copy of each are present it creates a 3rd phenotype, which we call blue axanthic. It is likely that the axanthic gene is recessive as well, but does it produce a distinguishable phenotype on its own without a copy of anerythristic being present is the question. I think some of Scotts past breedings says it can't, but I am not completely certain that anerythistic has ever been completely taken out of the equation, but it is and het axanthic x het axanthic produces all normals in large sample size with no axanthic phenotype expressed, then the question becomes does xx just look normal or is it lethal?

[chris-uk]

It is likely that the axanthic gene is recessive as well, but does it produce a distinguishable phenotype on its own without a copy of anerythristic being present is the question. I think some of Scotts past breedings says it can't, but I am not completely certain that anerythistic has ever been completely taken out of the equation, but it is and het axanthic x het axanthic produces all normals in large sample size with no axanthic phenotype expressed, then the question becomes does xx just look normal or is it lethal?

That is probably impossible to answer without genetic sequencing of all offspring from a het axanthic x het axanthic pairing, and testing of any stillborns and slugs (I'm assuming a slug can be an undeveloped fertilised egg).
I suspect that if that pairing has consistently produced normal offspring that two axanthic genes are incompatible with life.

[mb90078]

I'm with you except for "xx=normal or axanthic or lethal, not completely sure yet". You lose me there.