Here's why:
* Co-dominance: In co-dominance, both alleles are expressed equally in the heterozygous genotype.
* Example: Let's say the alleles are "R" (red) and "W" (white).
* RR: Red phenotype
* WW: White phenotype
* RW: Both red and white are expressed equally, resulting in a third phenotype (e.g., pink, speckled, or roan).
Therefore, with two co-dominant alleles, you can have three distinct phenotypes.
