The following: (a) To propose a general model of the molecule by the given information, and its description. (b) Base-pairing properties for H and X in the model. (c) To determine whether both H and X are purines or both pyrimidines, or one is a purine and one is a pyrimidine. Introduction: DNA (Deoxyribonucleic Acid) is a double helix structure that contains the genetic instructions in almost every organism. The two helices or strands of DNA are a polymer of nucleotides that are made up of nitrogenous bases, a deoxyribose sugar, and a phosphate group. The nitrogenous bases present in DNA are: purines that includeguanine (G) and adenine (A) and pyrimidines namely cytosine (C) and thymine (T). Both purine and pyrimidine have different sizes due to significant difference in their structures.

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Chapter 9, Problem 30PDQ

Summary Introduction

To review:

The following:

(a) To propose a general model of the molecule by the given information, and its description.

(b) Base-pairing properties for H and X in the model.

(c) To determine whether both H and X are purines or both pyrimidines, or one is a purine and one is a pyrimidine.

Introduction:

DNA (Deoxyribonucleic Acid) is a double helix structure that contains the genetic instructions in almost every organism. The two helices or strands of DNA are a polymer of nucleotides that are made up of nitrogenous bases, a deoxyribose sugar, and a phosphate group. The nitrogenous bases present in DNA are: purines that includeguanine (G) and adenine (A) and pyrimidines namely cytosine (C) and thymine (T). Both purine and pyrimidine have different sizes due to significant difference in their structures.

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