Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Chapter 11, Problem 10MC

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Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Scientists have also noticed unusual coloration among certain condor populations. Andean condors are typically black in color. However, a few unique white feathered individuals have occasionally been noted. These white feathered individuals are not well-camouflaged, and are easily spotted by larger predators. Recently, scientists noted that a black feathered condor had mated with a white-feathered condor, and their three chicks all appeared to have gray feathers. Closer examination of these condor chicks revealed that the chicks actually possessed a mixture of black feathers and white feathers, giving them a gray appearance from a distance. Please NAME and EXPLAIN the genetic phenomenon described here.

Uniquely explain the relationship between primate mating groups and sexual dimorphism in your own words.

A. Water currents in the ocean are much stronger than any sperm. How do sperm and egg find each other? B. In humans there are no water currents and the volume of the female reproductive tract is relatively limited. Then, why does the male have so many sperm? C. Why do sea urchins have external fertilization? D. Then why don't the parents take care of the young? E. Because the urchin life involves two or more ecological niches, they are more susceptible to predation and exposure to environmental toxins. What environmental conditions, predators and toxins might they be exposed to at each stage?

Answer 2

Question

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Answer 3

Question

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Answer 4

Question

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Answer 5

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Answer 6

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Answer 7

Chapter 11, Problem 10MC

Summary Introduction

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Answer 8

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Answer 9

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Answer 11

Ch. 11 - Prob. 1SA Ch. 11 - Prob. 2SA Ch. 11 - Prob. 3SA Ch. 11 - Prob. 4SA Ch. 11 - Prob. 5SA Ch. 11 - Prob. 6SA Ch. 11 - Prob. 7SA Ch. 11 - Prob. 8SA Ch. 11 - Prob. 9SA Ch. 11 - Prob. 10SA

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Solution Summary: The author explains that sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Concept explainers

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Chapter 11 Solutions

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Solution Summary: The author explains that sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

Concept explainers

Introduction: Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.

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Chapter 11 Solutions

Introduction:

Sexual dimorphism is thought to have evolved due to male-male competition and the need to attract females.