The conclusion<>evolved<>from a common ancestor$$$The conclusion that two animal species evolved from a common ancestor in recent geological history<>is best supported<>by the observation that the species have similar bone structure$$$the species<>have<>similar bone structure
So when two host species have evolved from a common ancestor, the parasites that were originally present in that common ancestor evolve with the two new hosts.
The conclusion that two animal species evolved from a common ancestor in recent geological history is best supported by the observation that the species have similar bone structure.
Which of the following observations best supports the conclusion that two animal species evolved from a common ancestor in recent geological history?