3. Do you think that there may be some closely related species of organisms that cannot be identified with a classification key? Explain your answer.

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

Are the layers of rock above and below the coal older or younger?

How does the human body lever work?