Chapter 32.4, Problem 3R

Summary Introduction

To review:

The explanation of the position of the birds among the reptiles on the basis of fossils, molecular, and morphological evidences.

Introduction:

The view that birds are closely related to reptiles was not welcomed until enough evidence came into light. The major evidence was provided in the form of the fossils from theropods. More advancements in the molecular biology tools like the molecular analysis of deoxyribonucleic acid (DNA) and the cross-checking of the morphology from different sources of the reptilian fossils led to the conclusion that the birds have evolved from the reptiles.