An allele is:
a) a version of a gene.
b) a trait that can be affected by the external environment.
c) always codominant to its counterpart in another chromosome.
d) the result of a change in phenotype.

!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

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