Color Genetics
AGOUTI
A/A - Normal agouti - cannot produce charcoal
A/A2 - No copies of the ALC agouti gene.  Cannot produce charcoal
A2/A2 - No copies of the ALC agouti gene.  Cannot produce Charcoal *
A/a - Carries melanistic (non agouti) - can produce charcoal with the right ma
te
a/a - Melanistic - 2 copies of non agouti gene
A/Apb - Carries Asian Leopard Cat agouti
APb/a - Expresses charcoal phenotype
APb/A - 1 copy of the ALC agouti gene - possible charcoal offspring with the right ma
te
APb/A2 - 1 copy of the ALC agouti gene - possible charcoal offspring with the right
mate
APb/APb - 2 copies of the ALC agouti gene - possible charcoal offspring with the right ma
te
Ls/A - No copies of ALC gene - No charcoal offspring**
ALs/A2 - No copies of ALC gene - No charcoal offspring**
Apb/Apb - Some consider charcoal but usually lacks the dark cape
SNOW
C/C - Does not carry
C/cs - Carries lynx
C/cb - Carries sepia
cs/cs - Seal lynx
cs/cb - Seal mink
cb/cb - Seal sepia
DILUTE
D/D - Does not carry dilute
D/d - Carries dilute
d/d - Dilute (blue)
BROWN
B/B - Does not carry
B/b - Carries chocolate
B/b1 - Carries cinnamon
b/b - Chocolate
b/b1 - Chocolate
b1/b1 - Cinnamon
SILVER
I/i - Heterozygous silver
I/I - Homozygous silver
i/i - Not silver

*  A2 is an alternative agouti vari
ant found in Bengal and Savannah cat. The phenotypic effect
of A2 has not been established.
**  ALs is an alternative agouti vari
ant found in Savannahs and Serval cats.  The phenotypic
  effect of ALs has not been established.
                                
 
                                                                 
A little info on Snows
C - is for color point.  C means full color.   Cb - Burmese aka sepia.  Cs - Siamese aka seal lynx
point.  c - Albino which is extremely rare.  Mink is not a color allele.  Mink is created when one
cat has 1 copy of the Burmese and 1 copy of Siamese.  

                                                             Agouti
A is the agouti gene and is dominate.  a is the non-agouti and is recessive.  Dominate alleles
only need 1 gene to be seen.  Recessive needs 2.
                                                        B is for Brown
B is dominate.  b is recessive (chocolate) but still dominate over b1 cinnamon.
                                                            Dilute (D)
D is full dilute color.  d is the blue or chocolate gene.  Black is diluted to blue.   Chocolate would
be diluted to lilac.
                                                             Silver
I - Silver is the inhibitor gene.  I is a dominate gene so only one is required to produce silver
kittens.  It is not carried.  One parent must be silver to produce silver.  If both parents are silver
there is usually less tarnish.  There are no color tests for silver.

Bottom line - recessive alleles require two copies to be seen while dominate alleles require only
one to be seen.  Dominate colors may carry recessive alleles for several generations and can pop
up when least expected. That can be a very nice surprise!  Cats never carry silver or mink.

Genotype - actual genetic makeup - the letter codes - A, B, APb, etc
Phenotype - what we see - the color, spotted or marble, etc
Heterozygous - having two different allele copies - A/b, D/d, etc.
Homozygous - havin
g two identical allele copies - A/A, C/C, etc.
Allele - one of two or more forms of a gene
Agouti - a gene that is responsible for determin
ing whether an animals coat is banded or solid