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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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Section
BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781337408332
Chapter 18, Problem 10SQ
Textbook Problem
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A diagram that shows evolutionary connections between clades is called a _______.

  1. a. karyotype
  2. b. molecular clock
  3. c. cladogram
  4. d. homologous structure

Summary Introduction

Concept introduction: Cladogram is a diagram that represents the hypothetical relationship between different groups of animals called a phylogeny. It is used to visualize the similarities and commonly shared characters of different groups of animals. A cladogram uses lines to demonstrate branches that end at a clade. A group of animals whose members possess one or more derived characters is called as a clade.

Explanation of Solution

Reason for correct answer: A cladogram is a pictorial representation that visually summarizes about how a group of animals (clade) are related with each other. It contains many lines, indicating different lineages, which then divide into two at the nodal region. Each node represents a common ancestor.

Option c. is given as “cladogram”. The pictorial representation that is used in evolutionary studies to finding out the relationship between different clades is called as a cladogram.

Therefore, option c. is the correct answer.

Reasons for incorrect answer:

Option a. is given as “karyotype”...

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