Cats
indeed genetically determined) to the homozygous recessive condition at some locus other
than that of the albino series of the black-brown alternatives.
[Modern notation for the offspring: Aa Bb Ccs Dd oo T- (I’ve used “T” on its own
because the report doesn’t say if the tabby is classic (Tc) or mackerel ( TM )]
Neil B. Todd
The Biological Laboratories, Harvard University
And that seemed to be the end of it until 2015 when Kathryn Eden posted photos of Milkdud,
a Donskoy (Don Sphynx kitten) whose colour defied analysis. Born to black parents,
Milkdud’s genetic test results were:
Agouti Result: a/a - Non-agouti (solid colour)
Albino Result: N/N - No copies of albino allele are present.
Amber Result: E/E - No copies of the mutation for Amber.
Brown Result: B/B - Full color black, does not carry brown or cinnamon.
Colourpoint Result: C/C - Full colour, cat does not carry Burmese or Siamese alleles.
annaabi.ee 
