ESSENTIAL CELL BIOLOGY-TEXT (PB)
ESSENTIAL CELL BIOLOGY-TEXT (PB)
5th Edition
ISBN: 9780393680324
Author: ALBERTS
Publisher: NORTON
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Chapter 7, Problem 6Q
Summary Introduction

To discuss: The statement, “During the evolution of life on Earth, RNA lost its glorious position as the first self-replicating catalyst. Its role now is as a mere messenger in the information flow from DNA to protein”.

Introduction: Earlier, it was suggested by RNA world hypothesis that genetic continuity and development of life on Earth was through replication of RNA. It was believed that in primitive cells, RNA catalyzed chemical reactions and stored genetic information. RNA has the properties of self-replication and catalyzes its own synthesis. During evolution, DNA took over as genetic material, and proteins became structural cell components and major catalysts.

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Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY