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Genetics
Color Possibilities

Ever wonder how certain people can come up with numbers for color possibilities for a foal? The simplist way to do this is to use a punnit square.

The first thing you need to know is the genotype of the parents. I will use Golden Gambler (Ee NC^r AA) as the sire and a buckskin mare that is (Ee NC^r Aa). The following chart is how I would set up the information. Notice I am only crossing two factors (black and cream). This make the chart much simpler (and I KNOW that the foal will have at least one agouti since Gambler is homozygous for the agouti)

To find the color possibilities, I fill in the chart like so:

Then I take out the results and read the colors (keep in mind that I know that the foal will have the agouti, so anything that would be black, smokey black, or smokey cream is bay, buckskin, or perlino)

EECC - bay (homozygous for black)
EECC^r - buckskin (homozygous for black)
EeCC - bay (heterozygous for black)
EeCC^r - buckskin (heterozygous for black)
EECC^r - buckskin (homozygous for black)
EEC^rC^r - perlino (homozygous for black)
EeCC^r - buckskin (heterozygous for black)
EeC^rC^r - perlino (heterozygous for black)
EeCC - bay (heterozygous for black)
EeCC^r - buckskin (heterozygous for black)
eeCC - chestnut
eeCC^r - palomino
EeCC^r - buckskin (heterozygous for black)
EeC^rCr^r - perlino (heterozygous for black)
eeCC^r  - palomino
eeC^rC^r - cremello

Then you calculate ratios (remember to make sure your numbers add up correctly):

3:16 Bay
6:16 Buckskin
3:16 Perlino
1:16 Chestnut
2:16 Palomino
1:16 Cremello

Then you can do your percentages (100/16 = 6.25...and again, don't forget to make sure that your percentages add up to 100%).

18.75% Bay
37.5% Buckskin
18.75% Perlino
6.25% Chestnut
12.5% Palomino
6.25% Cremello

Here is a chart for you to fill out and use:

Westwood Farms
Locust Dale, Virginia 22948
westwood_farms@yahoo.com