Biochemical question?

[webbertay]

Why might biochemical evidence suggest that rabbit is less envolved than horse or a pig?

I haven't learnt this yet but it's in our homework. What is biochemical? I looked it up but it gave all these complex definitions about evolution which our class has not yet covered. Can someone help me with the question above?

[alextemplet]

How do you mean "less evolved"? Each organism is adapted to fit a different ecological niche. The rabbit seems to do just as well in its niche as the horse does in its niche.

[JorgeLobo]

The questions begs a common starting or reference point against which you might judge the relative level genetic (DNA) change and presumes linear evolution.

[alextemplet]

Yeah, and that's what makes the question so strange. Evolution is not linear; it is more like a branching tree than some sort of straight line or ladder. Bacteria can be considered to be just as highly evolved as humans.