DISCLAIMER: If there is incorrect information, please comment to let me know so I can fix it. However, if there is missing information, it is most likely intentional as this is meant to be very very basic. If you are that invested in equine genetics, there are many other helpful guides and explanations on DA, as well as the internet as a whole. This is meant for those who are confused and/or need a quick reference for what genes create what colors.
If a horse is Homozygous, it means that it has two dominant alleles. EE is homozygous black. ChCh is homozygous champagne. CrCr is homozygous cream. Homozygous means that one copy will always pass to the horse’s offspring.
Example: ee aa CrCr = Cremello X ee aa = Chestnut
= ALWAYS has palomino foals: ee aa nCr
Example: Ee Aa ChCh = Amber champagne X Ee aa ChCh = Classic Champagne
= ALWAYS have ChCh foals. Possibly Amber Champange, Classic Champagne, or Gold Champagne.
This is because if you are choosing your foal’s genetics, you get to choose one of the two alleles for each gene. Ee you can choose E or e. For Aa you can choose A or a. But for homozygous genes you will have the same when you have ChCh.
geno: ee aa nCr nD nCh nZ nP nTb nSb LpLp nSty (patn1patn2)
sooty pangare gold cream champagne dun tobiano sabino semi leopard appaloosa
geno: ee aa nCr nD nP nSb nO LpLp nSty
sooty pangare dunalino sabino overo snowflake appaloosa
but i have no idea how to draw that... and i can't seem to find a 'pangare' collor