Quote:
In that case, the two rabbits I was dithering on are siamese sable agouti and smoke pearl agouti. This is how I come to that conclusion:
The "C" series:
C - fully dominant, codes for both yellow and black pigment to be produced.
cchd - "dark chinchillation" (chinchilla) removes yellow from the coat, and a just a little of the black.
cchl - "light chinchillation" (shaded) removes yellow from the coat, and even more of the black.
The reduced black pigment appears a very deep brown on the "points," lighter brown on the body.
ch - himilayan (pointed white, californian) No yellow pigment, pink eyes. Black appears only on the cooler parts of the body (nose, ears, paws, tail.)
Chilling of the skin can cause black to appear on other parts of the rabbit at times.
c - Ruby Eyed White. Fully recessive, "albino" with no pigment in the hair coat at all.
That ^ is called a "ladder of dominance." Each gene is dominant to the ones below it, and recessive to the ones above. If the buck is a REW, he must be cc, the only genes he has in the C series are the full recessives. He can't be hiding any of the other genes. If the doe is a chestnut, she is expressing the fully dominant C, because she clearly shows both black and yellow pigment. She could be carrying but not expressing anything that is lower on the ladder. One of her babies is a Siamese Sable, which is the Shaded cchl (combined with the self genes in the A series.) The doe can only have 2 genes from the C series (one that came from her mother, one from her father). Since one of her babies has the cchl gene, and it
can't have come from the buck (who only has c's), the doe must be Ccchl. All of her babies must get either the C or the cchl from her. Therefore, the agouti-patterned babies that don't have any yellow in their coats have the shaded gene, not the chinchilla gene, and are siamese sable agouti and smoke pearl agouti, respectively. Clear as mud?
edited for brain fade!