Chapter 24.1, Problem 4CC

Summary Introduction

To explain:

The reason how the genetic information flows from the RNA to DNA in the changing RNA world and whether such a flow occurs today.

Concept introduction:

The primitive life present on the earth contained RNA with self-enzymatic activity. The nucleotides like purines and pyrimidines formed the genetic material DNA. The changing environment conditions today are different and there is no such flow of information from RNA to DNA inside the cell.