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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332

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Chapter
Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 20, Problem 4SQ
Textbook Problem
134 views

The genetic material of HIV (a retrovirus) is ________ .

  1. a. DNA
  2. b. RNA
  3. c. protein
  4. d. lipids

Summary Introduction

Introduction: Human immunodeficiency virus (HIV) is a virus under retroviral subgroup classification that causes acquired immunodeficiency syndrome (AIDS) infection in humans. It is an RNA virus that possesses RNA as its genetic material. HIV consists of ssRNA that transcribes into dsDNA (using reverse transcriptase enzyme) when integrates into host cell using its replication machinery. After transformed to DNA, the viruses produce proteins that are required for synthesis of new viral particles.

Explanation of Solution

Reason for correct answer:

According to Baltimore’s classification of viruses, retroviruses are the group of viruses that contain RNA as the genetic material. And they get converted to DNA only after entering the host. As HIV virus belongs to RNA viruses, the genetic material present in them is RNA.

Option b. is given as “RNA”.  HIV viruses contain RNA as the genetic material.

Hence, option b. is correct.

Reasons for incorrect answer:

Option a. is given as “DNA”. DNA viruses contain DNA as the genetic material. Retroviruses only contain RNA as their genetic material, not a DNA...

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