In Studies of Gene Expression,which Observation Would Be the Least

Multiple Choice

In studies of gene expression,which observation would be the least likely?

A) As the result of radically different developmental processes within an insect species,some members of the species have a pair of wings that its conspecifics lack.
B) Expression of a gene that is important in developmental processes varies with temperature.
C) A species of fish is much larger than fish in a closely related species because a gene affecting bone growth is expressed earlier in development in the larger fish than in the related species.
D) The amino acid sequence of a Hox gene protein is extremely similar in nematodes and humans.
E) One rodent species has a narrower face than all others,because in that species the expression pattern of a gene that is important in development is more restricted in its spatial effects.