Biology: The Unity and Diversity o...

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



Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 12, Problem 1SQ
Textbook Problem

One evolutionary advantage of sexual over asexual reproduction is that it produces ______.

  1. a. more offspring per individual
  2. b. more variation among offspring
  3. c. healthier offspring

Summary Introduction

Introduction:  Asexual reproduction is one of the modes of reproduction where one cell is divided into two equal and identical daughter cells. The same parent gives rise to two individual clones. The sexually reproducing organisms give rise to unique progenies that contain genes from both parents. Such reproduction gives evolutionary advantages compared to asexually-reproduced ones to survive in unfavorable conditions.

Explanation of Solution

Reason for correct answer: Sexual reproduction is a reproduction where the offspring that are produced inherit genes from both its parents. It will not be exactly as its parents but will be mixed and show diversity after each generation. Variations are seen among them as they possess randomly-mixed genetic traits from both their parents and give birth to unique young ones. Such offspring are able to survive better in unfavorable conditions than asexual ones.

Option b. is given as “more variation among offspring”. Sexual reproduction results in the formation of offspring that have genetic diversity from their parents.

Hence, the correct answer is option b.

Reason for incorrect answer:

Option a. is given as, “more offspring per individual”. Sexual reproduction results in the formation of a distinct individual...

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