Becker's World of the Cell (9th Edition)
Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 17, Problem 17.7PS

(a)

Summary Introduction

To determine:  The base in DNA to be deaminated to form each of the bases in reference to figure 17-36a from the question.

Introduction:  DNA refers to the genetic material of a cell. DNA is a double stranded structure and each strand is made up of nucleotides. A nucleotide is made up of four nitrogenous bases which are adenine, cytosine, guanine, and thymine along with a deoxyribose sugar and a phosphate group. Covalent bonds are used to join one nucleotide to the next.

(b)

Summary Introduction

To determine: The reason for depiction of three bases in reference to figure 17-36a from the question when DNA contains four bases.

Introduction: DNA refers to the genetic material of a cell. DNA is a double stranded structure and each strand is made up of nucleotides. A nucleotide is made up of four nitrogenous bases which are adenine, cytosine, guanine, and thymine along with a deoxyribose sugar and a phosphate group. Covalent bonds are used to join one nucleotide to the next.

(c)

Summary Introduction

To explain: The importance that the bases in reference to figure 17-36a given in the question do not occur naturally in DNA.

Introduction: DNA refers to the genetic material of a cell. DNA is a double stranded structure and each strand is made up of nucleotides. A nucleotide is made up of four nitrogenous bases which are adenine, cytosine, guanine, and thymine along with a deoxyribose sugar and a phosphate group. Covalent bonds are used to join one nucleotide to the next.

(d)

Summary Introduction

To determine: The reason that the presence of 5-Methylcytosine is likely to increase the probability of a mutation.

Introduction: DNA refers to the genetic material of a cell. DNA is a double stranded structure and each strand is made up of nucleotides. A nucleotide is made up of four nitrogenous bases which are adenine, cytosine, guanine, and thymine along with a deoxyribose sugar and a phosphate group. Covalent bonds are used to join one nucleotide to the next.

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