Chapter 14.2, Problem 1LO

Summary Introduction

To describe:

How the fossil record, biogeographical evidence, comparative anatomy, and biochemistry support evolutionary theory.

Introduction:

Fossils help in recognizing the pattern of evolution and the history of a particular species. The transitional links connects the present with the past. According to Darwin, the change in the biogeographical situation gives rise to the change in the phenotype of a species. This supports the process of adaptation. The similarity in the anatomy of the structures of different organisms is known as homologous structures. They act in providing the evidence of the common ancestry. As DNA and RNA are the genetic codes that are passed down from one generation to another, hence it shows that everything is evolved from a single ancestry.