Question

What are some of the key sources of evidence used in the field of evolutionary biology to study the relationships between different species and their common ancestors?

A. -morphology
B. -chromosomal characteristics
C. -nucleotide and amino acid sequences
D. -embryological development
E. -fossil record info

Answer 1

The key sources of evidence used in evolutionary biology are morphology, genetic sequences, and the fossil record.

Step-by-step explanation:

The key sources of evidence used in the field of evolutionary biology to study the relationships between different species and their common ancestors are:

1. Morphology: Scientists analyze the physical characteristics and structures of organisms to identify similarities and differences, which can indicate evolutionary relationships.
2. Nucleotide and Amino Acid Sequences: Comparing the DNA and protein sequences of different species helps scientists determine their genetic relatedness and construct phylogenetic trees.
3. Fossil Record Information: Fossils provide valuable evidence of extinct species and their characteristics, allowing scientists to trace the evolution of organisms over time.