Chapter 17.4, Problem 1R

Summary Introduction

To review:

The reason due to which a high number of proteins are expressed by a relatively lesser number of genes encoding for proteins in the genome of humans.

Introduction:

The human genome’s size is 3.2 billion base pairs, where it contains introns or noncoding genes, exons or coding genes and repetitive sequences. Human genes code for many proteins, which performs a functional and structural role in the body at the cellular and tissue level. The number of genes encoding for proteins is about 21,000, which is 0.1 percent of the human genome. However, the number of proteins is higher, which does not match the number of genes encoding for protein.