How can you explain that the fact that fish, penguins, and dolphins all have the same basic shape?

What element does susan b. anthony include in this passage to strengthen her argument?

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

Amap's orientation is typically determined by an