Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Question
Chapter 16.3, Problem 3CYL
Summary Introduction
To explain:
The way in which sexual selections works and describe examples of its outcome.
Introduction:
Along with colors and male structure, the health of the species is the priority which is decided by the competition between the two bighorn males. The males also exhibit the courtship behavior. The sexual selection favors traits that in organisms mating.
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How does sexual selection operate?
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
What are the characteristics of mate preference in sexual selection?
Chapter 16 Solutions
Biology: Life on Earth with Physiology (11th Edition)
Ch. 16.1 - define evolution in terms of concepts from...Ch. 16.1 - define equilibrium population and describe the...Ch. 16.2 - Evolution of a Menace The mutant alleles that...Ch. 16.2 - describe how mutation, gene flow, genetic drift,...Ch. 16.2 - A flu vaccination stimulates your immune system to...Ch. 16.2 - If it were true that mutations do occur in...Ch. 16.2 - Explain how the distribution of genotypes in...Ch. 16.2 - If a population grows large again after a...Ch. 16.2 - Prob. 4TCCh. 16.3 - describe why selection of phenotypes can affect...
Ch. 16.3 - A team of phys clans treated four patients with...Ch. 16.3 - If we studied a population of bighorn sheep and...Ch. 16.3 - explain how competition and predation influence...Ch. 16.3 - When selection is directional, is there any limit...Ch. 16.3 - Prob. 3CYLCh. 16.3 - Microbiologists have discovered that alleles...Ch. 16.3 - compare and contrast directional selection,...Ch. 16 - In North America, the average height of adult...Ch. 16 - The ______ provides a simple mathematical model...Ch. 16 - The alleles responsible for antibiotic resistance...Ch. 16 - What is a gene pool? How would you determine the...Ch. 16 - By the 1940s, the whooping crane population had...Ch. 16 - Different versions of the same gene are called...Ch. 16 - Stabilizing selection on a trait tends to a. make...Ch. 16 - Define equilibrium population. Outline the...Ch. 16 - An organisms ______ refers to the specific alleles...Ch. 16 - An adaptation is a. any trait that arises from a...Ch. 16 - How does population size affect the likelihood of...Ch. 16 - A random form of evolution is called ________....Ch. 16 - Which of the following statements about mutations...Ch. 16 - If you measured the allele frequencies of a gene...Ch. 16 - Competition is most Intense between members of...Ch. 16 - Genetic drift occurs a. when different phenotypes...Ch. 16 - People like to say that you cant prove a negative....Ch. 16 - The evolutionary fitness of an organism is...Ch. 16 - Describe the three ways in which natural selection...Ch. 16 - What is sexual selection? How is sexual selection...
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- Which of the following statements about inter- and intra-sexual selection is FALSE? O Males are typically the sex experiencing intrasexual selection because they are generally limited by access to mates, whereas females are generally limited by access to resources. Intersexual selection can explain the occurrence of extravagant display traits in males such as the ornate coloration in guppies. Males competing against each other to aquire the best nuptual gift is an example of intrasexual selection. O Either intersexual or intrasexual selection may occur within a population, but not both.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_forwardExplain how negative frequency-dependent selection works.arrow_forward
- In the context of the runaway sexual selection hypothesis, what role does female mate choice play in the evolution of exaggerated traits in males? Females ignore males with exaggerated traits in favor of other factors such as resources Females display exaggerated traits themselves to attract males with similar traits Females have no preference for males with exaggerated traits Females actively select mates with these traits, leading to their exaggerated developmentarrow_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_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_forward
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