Question

The fossil record contains many intermediate forms of at least one evolutionary line of animals. Beginning with a set of ancient fossils of extinct animals that had three toes, the fossil record continues with intermediate forms containing two toes, and then to a single toe. What concept does this finding support?

reproductive isolation
gradualism
speciation
punctuated equilibrium

Is it gradualism?

Answer 1

I agree.

Answer 2

Thank you!

Answer 3

You're welcome.

Answer 4

[AI-generated answer — Explain Bot]

Yes, the concept that is supported by the finding described in your question is gradualism. Gradualism is the idea that evolutionary change occurs gradually and continuously over long periods of time, with species evolving through a series of small, cumulative changes. In the case of the fossil record you mentioned, the presence of intermediate forms with different numbers of toes shows a gradual transition from three toes to two toes to eventually a single toe in the evolutionary line of animals. This pattern of gradual change is consistent with the concept of gradualism in evolution.