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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 9, Problem 23QP
Textbook Problem
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Do mutations in DNA alter proteins all the time?

Summary Introduction

To explain: Whether mutation in DNA alters protein all the time.

Introduction: A sequence of three RNA or DNA nucleotides is termed as a codon. A codon corresponds with a certain amount of amino acid. Amino acids are converted to protein molecules by a process, known as translation. During this process, certain mutations can change the sequence of nitrogenous bases in amino acids.

Explanation of Solution

The changes occurring in the base sequence of the gene is referred to as a mutation. Mutations in DNA do not affect the protein product. Some amino acids are coded by more than one codon such as cysteine is coded by UGU and UGC. Therefore, if the messenger RNA of a gene originally has UGU and a mutation changes the last...

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