In co-dominance, I don't get why the symbols we use are different.
eg. C-colour.
R-red, W-white
C^RC^R = red
C^RC^W
Whereas when not dealing with co-dominance, it's just
RR = red
WW = White
Why can't you just do that, why do you need the 'C'?
Or am I just reading too much into this and it's just to show that you're dealing with co-dominance