The repeated evolution of flightlessness among birds. Introduction : The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

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Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

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Ostrich wings are vestigial because they are too rudimentary to perform the function for which they evolved in the species’ flying ancestor. Nonetheless, the ostrich uses its wings for other purposes. For example, an ostrich may extend its wings to the side while running, to help maintain balance, and it may spread its wings as part of a threat display. These uses show that evolution by natural selection can sometimes repurpose vestigial structures that have lost the function for which they originally evolved. But whether a vestigial structure remains useless or acquires a new function, it is homologous to the version that retains its original function in other organisms and provides evidence of common ancestry. But are all similarities between different organisms the result of shared ancestry?

What is a plausible scenario for evolution of wings and flying insects?

What evidence is there that the 15 species of finch all evolved from one common ancestor? DNA analysis shows that their DNA is almost identical with only minor changes. Scientists have been studying them since Darwin in 1835 and have watched them evolve. Observation of all 15 species shows that they look incredibly similar, with minor changes to beak size and shape. These 15 species are found nowhere else in the world, and the islands are located close enough to the mainland for birds to migrate.

Answer 2

Question

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 3

Question

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

Question

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 5

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Answer 6

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Answer 7

Chapter 25.3, Problem 4TC

Summary Introduction

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Answer 8

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Answer 9

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Answer 11

Ch. 25.1 - describe the features that distinguish chordates...Ch. 25.2 - name and describe the chordates that are not...Ch. 25.2 - name and describe the craniates that are not...Ch. 25.2 - describe the key adaptations of vertebrates?Ch. 25.2 - Prob. 1CSC Ch. 25.3 - Most sharks avoid humans, but large sharks of some...Ch. 25.3 - With regard to water regulation (maintaining the...Ch. 25.3 - Prob. 2TC Ch. 25.3 - Consider the graph shown in Figure E25-2. Imagine...Ch. 25.3 - Prob. 4TC

The repeated evolution of flightlessness among birds. Introduction : The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Solution Summary: The author analyzes the repeated evolution of flightlessness among birds. The birds have the ability to fly, which offers great advantages over other animals.

Concept explainers

Videos

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Want to see the full answer?

Chapter 25 Solutions

The repeated evolution of flightlessness among birds. Introduction : The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Solution Summary: The author analyzes the repeated evolution of flightlessness among birds. The birds have the ability to fly, which offers great advantages over other animals.

Concept explainers

Videos

To discuss: The repeated evolution of flightlessness among birds. Introduction: The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.

Want to see the full answer?

Chapter 25 Solutions

To discuss:

The repeated evolution of flightlessness among birds.

Introduction:

The birds have the ability to fly. The flight offers some great advantages to birds over other animals, such as searching for food, escaping from predators, and many more.