Roan cattle are heterozygous hybrids of a cross between a white bull (WW) and a red cow (RR). If a roan bull were crossed with a red cow, what would be the possible phenotypes of thelr offspring?
a
1 Red; 2 White: 1 Roan
b
O Red: 2 White: 2 Roan
c с
2 Red: 0 White; 1 Roan
d
2 Red: 0 White; 2 Roan