If two species have almost identical biochemistry is likely they are related, which means they share a common ancestor.
What is biochemistry?
Biochemistry refers to the chemical composition of living organisms, as well as, the biological processes of the organism.
How is biochemistry related to evolution?
Evolution implies every organism that exists today is derived from an ancient organism. This causes related organisms to have very similar biochemistry.
Based on this, if the biochemistry is almost identical, for example, the DNA sequence is because the organisms are related. Moreover, the most common explanation is that the two organisms have at least one common ancestor or that they evolved from the same species.
Note: This question is incomplete; due to this, I answered it based on general knowledge.
Learn more about biochemistry in: https://brainly.com/question/725424
