Alright...this seems totally silly IMO. Here's a direct quote from the answer sheet.
"A) the E/e (black/red) locus?
None of the orignal or present day horses is black or any derivative of black (bay, buckskin etc). so only the red allele e was present at this locus.
b) the C/Ccr (color dilution) locus?
The original herd included sorrel (CC) palomino (CCcr) and cremello (CcrCcr) so both the C (colid color) and Ccr (diluter) alleles are present at this locus.
c) the To/to (paint) locus?
One of the original stallions and one of the original mares was a paint (white patches) and the rest of the herd was non-paint, so both the dominant paint allele To and the recessive non-paint allele to were present.
NOTE: ee, CCcr, Toto etc. are GENOTYPES NOT ALLELES. The gene pool does NOT contain geneotypes."
So in other words...I got points marked off because I didn't mention what colors were present. But colors are mentioned in the directions right above it so why would I need to repeat that? And any person that knows about horse genetics would be able to figure out the colors from the genotypes. My friend had our TA look at hers (who wrote the same stuff) before she turned it in and she said it was correct.