Chapter 21, Problem 14TYK

Summary Introduction

Introduction:  Every gene is made of specific nucleotide sequences that code for a specific amino acid. The nucleotide sequence involves the arrangement of four nitrogenous bases namely adenine, guanine, cytosine, and thymine or uracil. In the evolutionary process, the nucleotide sequence greatly varies. The accumulation of these variations leads to production of different amino acids and gradually this gives rise to new phenotypes.