Biological Science
5th Edition
ISBN: 9780321743671
Author: Scott Freeman
Publisher: PEARSON
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Chapter 26, Problem 10TYU
Summary Introduction
To review:
The reason behind sexual selection often leading to sexual dimorphism.
Introduction:
One of the mechanisms of evolution is the process of natural selection in which only those genotypes are selected which results in the fittest individual. Such genotypes which result in the fittest
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Explain how sexual selection might lead to a)sexual dimorphism and b) members of one sex (usually male) having traits that do not enhance their survival
Define sexual selection?
How does sexual selection operate?
Chapter 26 Solutions
Biological Science
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a. It...Ch. 26 - Prob. 5TYKCh. 26 - 5. QUANTITATIVE In a population of 2500, how many...Ch. 26 - 7. CAUTION Determine what is incorrect in the...Ch. 26 - Prob. 12TYUCh. 26 - QUANTITATIVE In humans, albinism is caused by...Ch. 26 - What does it mean when an allele reaches fixation?...Ch. 26 - Prob. 6TYK
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Explain the concept of Sexual Selection in humans ?arrow_forwardHow does sexual selection benefit the choices of mating between men and women?arrow_forwardAnisogamy is the term for sexual dimorphism in gamete size. a) Discuss the evolution of anisogamy from an ancestor in which gametes had equal size. What factors would lead to a divergence in gamete size among members of a population? b) Sexual selection can be strong in some species, and weaker in others. What determines the strength of sexual selection for a certain species? Discuss the differences in sex roles and Bateman’s Principle in your answer.arrow_forward
- What is the ultimate cause of variation in populations?arrow_forwardWould you expect sexual selection to increase or decrease adaptation of a population to its environment? Do the pleiotropic effects and good genes mechanism for the evolution of female preferences differ in their implications for adaptation to the environment?arrow_forwardAssume you are studying a species of slug where the eggs are fertilized and transferred to the male. As a result the male is not able to increase reproductive success by mating with multiple partners. Therefore which of the following about sexual selection in this species is not true? Females are more likely to develop traits that signal genetic quality to males. Females will be able to increase reproductive success with increased mating partners. Sexual selection in males will lead them to be choosy with what females they mate with. Sexual selection in males will lead them to mate indiscriminately when they find a female.arrow_forward
- What is purposeful control over mating by choice of parents for the next generation?arrow_forwardSexual selection tends to cause bigger size,more elaborate weaponry, or brighter colors in males. Is this an example of stabilizing,directional, or disruptive selection?arrow_forwardWhat does the Hardy Weinberg equation do? A) Show if a population is evolving B) Shows how many dominant alleles there are C) Does not work with asexual reproductionarrow_forward
- Identify whether each of the following scenarios is an example of intersexual or intrasexual selection (. a) Male bison fight each other for access to females L Select ] b) Female Birds of Paradise visit many different males to decide which male has the best dance [ Select ] c) Female jacanas defend their mates from other females [Select ] d) Male seahorses prefer to mate with larger females [ Select ] e) Female cicadas prefer males who provide the largest spermatophores [ Select ]arrow_forwardThe good genes model of sexual selection is a popular hypothesis for mate choice. What is an underlying flaw with the hypothesis that must be explained?arrow_forwardIf an X-linked recessive trait is present in 4 percent of the males in a population with random mating, what is the frequency of carrier females?arrow_forward
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