An actin gene in humans is 92% identical to the homologous gene in mice. An actin gene in humans is 80% identica to the homologous gene in yeast. What does this say about how long ago these organisms had a common ancestor?

Compare and contrast cladistics and phylogeny. what are their advantages and disadvantages? which is the most useful in understanding how an organism developed into its current form? which concept most strongly supports your opinion about the origin of any given organism?

Give an example of a trait that is controlled by more than one gene.

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