Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

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Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

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You are studying the evolution of a trait in two species of snakes where both species can flatten themselves so that they can glide from tree to tree. You know that this trait is not present in the ancestor of all snakes. With this information, is the trait a homology? a. Yes b. No c. Only in one of the species. d. Not enough information to tell.

A cat has front legs, and a bird has wings. Are these front legs and wings an example of homologous structures, or an example of analogous structures? Briefly explain your choice.

Which of the following pairs of structures is least likely to represent homology? Group of answer choices A. The mitochondria of a plant and those of an animal. B. The wings of a bird and those of an insect. C. The hemoglobin of a baboon and that of a gorilla. D. The brain of a cat and that of a dog. E. The wings of a bat and the arms of a human.

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Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

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Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

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Answer 4

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Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

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Answer 5

Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Answer 6

Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Answer 7

Chapter 22, Problem 2TY

Summary Introduction

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Answer 8

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Answer 11

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Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Solution Summary: The author explains that butterfly wings are not homologous to the other given options.

Concept explainers

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Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Want to see the full answer?

Chapter 22 Solutions

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Solution Summary: The author explains that butterfly wings are not homologous to the other given options.

Concept explainers

Videos

Introduction: Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).

Want to see the full answer?

Chapter 22 Solutions

Introduction:

Structures present in different organisms having the same ancestor or origin are called homologous. They do not always perform the same function. There are many structures in the nature that has same origin and same functions (sometimes).