Yes, Anna, that is what I meant, the shown trait will always be dominant to the hidden trait.
Karloff Wrote:breeding a pair of siblings by the same parents. they both end up with the same fur and eyes, both of which are of higher dominance than the hidden fur and owned by the parent whose trait didn't pass
Is that a typo? Because of course the parent’s trait did pass. Both parents passed a trait to the offspring, you just don’t see one of them; you only see the one which is more dominant.
Karloff Wrote:I breed the two siblings together. Because the hidden fur and eyes are recessive to the shown (dominant) fur and eyes, the kittens will share the parent's shown traits, but will still have the same hidden traits as the parents as well?
Well, yes, the shown traits will be the same as the dominant trait shown by the parent, but as to the hidden traits, that can change. You asked about the math, the 25%, so this is as good a place as any to put this example. I’m sure something like this has been posted on the forum many times, and I looked to see if I could find one that I thought Tad had written up, but didn’t find it.
Taking your example the generation before your back breed as I understand it:
So Dad is OciES/hidden fur Y. And Mom is PandiPlat/hidden fur X.
When they make a box there is a 25% chance of each of the following options. We don’t know the relative recessiveness of the hidden furs X and Y to each other but we know that they are both recessive to OciES (although I’m wondering if in your specific case one of the hiddens WAS also OciES since you don’t mention seeing any 3d fur, and you mention seeing a lot of OciES.)
1. Dad throws OciES, Mom throws PandiPlat -> OS will be PandiPlat/ocies.
2. Dad throws hiddenY, Mom throws PandiPlat -> OS will be PandiPlat/hiddenY.
3. Dad throws OciES, Mom throws hidden X -> OS will be OciES/hidden X.
4. Dad throws hidden Y, Mom throws hidden X -> OS will show whichever of the two is more dominant and hide whichever is more recessive.
Karloff Wrote:To get the hidden traits to show, i need to take a cat from outside the bloodline that is either showing or hiding the recessive trait from the sibling's kitten? Or, alternately breeding one of the siblings back with the parent that showed the hidden trait of the sibling?
Result 4. will show a hidden - whichever is most dominant. Or you can do a back breed, which is often faster, or you can get another cat from outside the bloodline, yes.
I hope I wrote all that correctly and that it is helpful.
