Take your time to answer i'll be (98 points) ~biology~ suppose that you found a vertebrate fossil and brought it to an expert. the expert showed you that the joint structure of the fossil was similar to the joint structure of a modern squirrel. infer the kinds of movements for which the animal had been adapted. explain your inferences in a paragraph.

As we know before in back in time. Animals will adapt to their environment that their ancestors didn't have. This animal must have used to have a straight legs but then adapted since it couldn't really move. Then over time it most have started to bend so that way it could move faster. I think that it must have had straight legs because most animals aren't originally the same like humans have tailbones and tails or six fingers. I also feel that it was a analogous structure. Because the squirrel and vertebrate fossil had the similar appearance but are not evolved together and don't have a common ancestor.

(Hope this helps!)

in 1859, charles darwin set out his theory of evolution by natural selection as an explanation for adaptation and speciation. he defined natural selection as the "principle by which each slight variation [of a trait], if useful, is preserved".