In systematics and phylogeny, the fossil record is especially important because
A) most groups are well represented.
B) it provides the absolute timing of evolutionary events.
C) random mutations make most biochemical methods unreliable.
D) DNA can be extracted from nearly all ancient fossils and then analyzed.
E) it provides the only data that is useful in reconstructing the past.

Question

Quizplus · Accepted Answer

The fossil record provides the absolute timing of evolutionary events, which is crucial in constructing phylogenetic trees and understanding the history of life on Earth. While there are limitations to using the fossil record (such as gaps in the record or biases in the preservation of certain organisms), it remains one of the most important sources of data for evolutionary biologists.

In Systematics and Phylogeny, the Fossil Record Is Especially Important