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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 13QP
Textbook Problem
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Determine the percent of the following gene that will code for the protein product. Gene length is measured in kilobases (kb) of DNA. Each kilobase is 1,000 bases long.

Chapter 9, Problem 13QP, Determine the percent of the following gene that will code for the protein product. Gene length is

Summary Introduction

To determine: The percent of the given gene that will code for the protein product.

Introduction: In a eukaryotic cell, a DNA strand contains both coding and non-coding part known as exons and introns respectively. Non-coding part of a chromosome does not code for mRNA. Coding portion is known as exon codes for mRNA.

Explanation of Solution

The given gene has:

  • Length of exon and intron = 1.5 Kb + 0.5 Kb + 0.5 Kb + 0.5 Kb 0.5 Kb
  • Length of beginning sequence = 3.5 Kb
  • Length of final sequence = 3.0 Kb
  • Length of exon sequence = 1.5 Kb + 0.5 Kb + 0.5 Kb

Proteincodingpropotion=ExonlengthGenelength

Therefore, the percent of the given gene that will code for the protein product is as follows:

Proteincodingproportion=1.5 Kb + 0

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