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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 8, Problem 9QP
Textbook Problem
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The basic building blocks of nucleic acids are:

  1. a. phosphate groups
  2. b. nucleotides
  3. c. ribose sugars
  4. d. amino acids
  5. e. purine bases

Summary Introduction

Introduction: An organism contains two types of nucleic acids in the form of DNA and RNA. DNA is found in the nucleus and mitochondria and RNA is found in the nucleus and cytoplasm.

Explanation of Solution

Reason for correct answer:

A nitrogen-containing base (A, G, C, T in DNA and A, G, C, U in RNA), sugar (deoxyribose in DNA and ribose in RNA), and a phosphate group which is highly acidic make a nucleotide. These nucleotides form a double-stranded DNA and single-stranded RNA. Hence, nucleotides are known as the building blocks of nucleic acids.

Option b. is given as “nucleotide.”

Nitrogen-containing base, sugar, and a phosphate group make a nucleotide and many nucleotides form DNA and RNA. Hence, the correct answer is option b.

Reasons for incorrect answer:

Option a. is given as, “phosphate groups.”

The phosphate group is a component of nucleotide which provides acidic nature to nucleic acids...

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