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

Question

Quizplus · Accepted Answer

The fossil record is important in providing the absolute timing of evolutionary events, which is crucial in constructing phylogenetic trees and understanding the relationships between different groups of organisms. While the fossil record may not be complete or representative for all groups, it still provides valuable information on past life forms and their evolutionary history. DNA analysis is also important, but it is limited by the availability and preservation of DNA in fossils. Random mutations do occur, but biochemical methods are still useful in phylogenetic analysis with appropriate statistical methods. The fossil record is not the only source of data for reconstructing the past, but it is an important one.

In Systematics and Phylogeny, the Fossil Record Is Especially Important