A change most likeiy to result in two distinct phenotypes (and possibly, speciation).

a
stabilizing selection

b
directional selection

c
disruptive selection

d
acquired variation

Cattle with brown fur and cattle with white fur will produce a reddish roan calf . when examined closely, the calf show about an even number of brown hairs and white hairs that give a reddish appearance when viewed from far away. the fact that both the brown fur allele and the white fur allele are expressed equally in the offspring is an example of