Northern California Angora Guild

Thursday, February 02, 2023

Color Genes: Filling in the Blanks





We saw photos of these three chocolate agouti French Angora bunnies in their condo a couple of days ago.   



This is a close shot of one of the buns.   
The basic chocolate agouti color codes are: A-bbC-D-E-
Translaton into plain English:
A-: Agouti pattern but don't know whether it carries a non-agouti or not.
bb: For sure this is all chocolate gene, no chance of carrying black or blue.
C-: Full color but don't know whether it carries chin c(chd), sable c(chl), himi c(h) or REW c.
D-: Dense color but don't know whether it carries dilute.
E-: Extension of color but don't know whether it carries non-extension of color.



Daddy of these three bunnies is Dasher who is also a chocolate agouti. 
His color code is also A-bbC-D-E-



Mama is Simone who is a black tort.
A black tort's basic color genetic code is  aaB-D-C-ee.



Babies get one copy of the color gene from each parent.  With the information of having a black tort mom, we can fill in several, though not all, of the blanks in both generations.

For the babies, we don't obtain additional information from sire Dasher as they are all the same color.  With Simone as the mom, 2 of the blanks of the babies are filled: a and e.    AabbC-D-Ee   
For Dasher, there is no additional information gained from his offspring.
For Simone, we can fill in 1 blank: b since all her babies are chocolate bb, one of the b has to have come from mom.   aaBbC-D-ee.

To summarize of the color genetics for:
the 3 chocolate agouti babies: AabbC-D-Ee
Dasher: A-bbC-D-E-
Simone: aaBbC-D-ee   





 


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