Chapter 4.3, Problem 1AYLO

Summary Introduction

To discuss:

Why every generation of cells must synthesize new DNA, although the number of chromosome remains the same from one generation to the next.

Introduction:

Cell cycle is an essential process by which cells increase in number while maintaining its genetic stability. In an organism, it is vital for growth and regeneration. However, it has to be tightly regulated to avoid dire consequences. Twenty-three pairs of chromosomes (total 46) are present in the human DNA. All two pairs of chromosomes carry the same genes except X and Y chromosomes. The X and Y chromosomes are called as the sex chromosomes; they determine the sex of human beings. The remaining 22 pairs of chromosomes are termed as autosomes.