Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs. Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Question

Want to see the full answer?

Answer 1

Question

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

You want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don't feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional 5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.

Eyes are often used in arguments for intelligent design because many consider this organ to be too complex to have evolved by chance alone. However, complex lensed eyes evolved independently both within cephalod mollusks and vertebrates including our own ancestor. In the evolution of these structures the corresponding phylogenies revealed that both: A) were preceded by the evolution of 'simple' light sensing eyes, thus having adaptive intermediate evolutionary steps. B) lacked intermediate evolutionary steps involving the evolution of 'simple' eyes. C) had intermediate evolutionary steps, but ultimately the vertebrate eye had a superior 'design' without any kind of blind spot, relative to the simple invertebrate cephalopod eye. D) were preceded by vestigial non-functional optic structures.

Is this evolutionary conservation of the pecten structure evidence that natural selection might be maintaining the pecten in its present form in many bird species? Is this theory one that suggests the pecten has a significant adaptive function in birds? Do you believe that experiments might be useful in determining the adaptive function of the pecten if it indeed serves an adaptive function? Outline a simple experiment to see whether the presence of a pecten in the bird's eye is an adaptation.

Answer 2

Question

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 5

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Answer 6

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Answer 7

Chapter 3, Problem 4PDT

Summary Introduction

To describe: Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs.

Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Answer 8

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Answer 9

Summary Introduction

To explain: The way in which adaptive and non-adaptive hypotheses can be tested.

Introduction: Adaptive and non-adaptive hypotheses explain the use and disuse of certain characters that may or may not be beneficial for the survival of the organism. If adapted, these characters pass them to the next generation as mutations.

Answer 10

Expert Solution & Answer

Answer 11

Expert Solution & Answer

Answer 12

Want to see the full answer?

Check out a sample textbook solution

See solution

Answer 13

Ch. 3 - Prob. 1PDT Ch. 3 - Prob. 2PDT Ch. 3 - Prob. 3PDT Ch. 3 - Prob. 4PDT Ch. 3 - Prob. 5PDT Ch. 3 - Prob. 6PDT Ch. 3 - Prob. 7PDT

Adaptive and non-adaptive hypotheses for the evolutionary loss of useless organs. Introduction: Lamarck proposed the hypothesis of use and disuse of organs. This explains that the organism acquires the characters through use and disuse of organs and passes these characters to the next generation.

Solution Summary: The author explains Lamarck's hypothesis of use and disuse of organs and how it can be tested.

Concept explainers

Want to see the full answer?

Chapter 3 Solutions