Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Chapter 19.4, Problem 3TYK
Summary Introduction
Introduction:
In intrasexual selection members of the same sex in a species compete with each other to mate with members of other sex in the same species. Further, intersexual selection is the competition between different sexes of the same species. Moreover, this selection characterizes the mate’s choice by the opposite sex.
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Intrasexual selection involves competition among one sex (typically males) for mating access to the other sex. Intersexual selection involves mate choice in which individuals from one sex (typically females) choose their mates from among individuals of the other sex. Imagine a group of males that is engaged in agonistic behavior, from which Male A emerges triumphant. Now imagine a female that is assessing all of the males that were involved in the fights, and chooses Male A. Explain why this situation shows how intrasexual and intersexual selection pressures are likely both at play in the trait selection.
one specific example of each type of sexual selection
can I have an example in a list for each type of sexual selection
intersexual and intrasexual
During mating season, male rams compete with each other for access to females. This describes
Group of answer choices
intersexual selection
intrasexual selection
the direct benefits model
Hamilton-Zuk hypothesis
Fisherian sexual selection
Chapter 19 Solutions
Principles of Biology
Ch. 19.1 - Prob. 1TYKCh. 19.1 - Prob. 2TYKCh. 19.1 - The phrase an organism evolves is incorrect....Ch. 19.1 - Prob. 1BCCh. 19.2 - Explain how geography played a key role in the...Ch. 19.2 - Prob. 2CCCh. 19.2 - Prob. 3CCCh. 19.2 - Prob. 1TYKCh. 19.2 - Homologous traits show similarities because the...Ch. 19.3 - What is the frequency of pink flowers in a...
Ch. 19.3 - Prob. 1TYKCh. 19.3 - Prob. 2TYKCh. 19.4 - Lets suppose the climate on an island abruptly...Ch. 19.4 - Prob. 2CCCh. 19.4 - Prob. 3CCCh. 19.4 - Prob. 4CCCh. 19.4 - Prob. 1TYKCh. 19.4 - Prob. 2TYKCh. 19.4 - Prob. 3TYKCh. 19.5 - How does the bottleneck effect undermine the...Ch. 19.5 - Prob. 1TYKCh. 19.5 - Prob. 2TYKCh. 19.5 - Prob. 1BCCh. 19.6 - How does migration affect the genetic compositions...Ch. 19.6 - Prob. 1BCCh. 19.6 - Prob. 1TYKCh. 19.6 - Populations that experience inbreeding may also...Ch. 19 - Prob. 1TYCh. 19 - An evolutionary change in which a population of...Ch. 19 - Homology occurs because different species occupy...Ch. 19 - Prob. 4TYCh. 19 - Prob. 5TYCh. 19 - Prob. 6TYCh. 19 - Prob. 7TYCh. 19 - Prob. 8TYCh. 19 - Prob. 9TYCh. 19 - The micro-evolutionary factor most sensitive to...Ch. 19 - Prob. 1CCQCh. 19 - Prob. 2CCQCh. 19 - A principle of biology is that populations of...Ch. 19 - Prob. 1CBQCh. 19 - Prob. 2CBQ
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- In general, males experience stronger sexual selection than females. -True -Falsearrow_forwardDuring mating season, male rams compete with each other for access to females. This describes (please just select one answer the one the best fits) intersexual selection intrasexual selection the direct benefits model Hamilton-Zuk hypothesis Fisherian sexual selectionarrow_forwardAssume that a scorpion presents a meal to a partner to entice them to mate. This would be an example of which of the following? Delayed Benefits Indirect Benefits Intrasexual selection Direct benefitsarrow_forward
- How much of our behavior is determined by our genes versus the environment? Provide two examples of why or why not.What do you think are the pros and cons for an individual if they believe genes determine their behaviors? What are the pros and cons for individuals if they believe nature determines their behaviors? What do you think are the implications for society if we put a lot of weight on nature or nurture?arrow_forwardEarlier explanations of altruistic behavior as a form of group selec-tion have been supplanted by Hamilton’s hypothesis of kin selection. What distinguishes kin selection and how does it accord with the no-tion of inclusive fitness, the relative number of an individual’s alleles that pass to the next generation?arrow_forwardSexual selection is kind of natural selection in which characteristics related to mating success are the targets of selection. male features are always the key characteristics selected. competition among individuals of the same sex is always involved. infertility is the most common problem. All of the choices are correct.arrow_forward
- Two male deer compete for access to a female by sparring with their antlers. What type of selection pressure is this? a Intrasexual b Intersexualarrow_forwardMale California sea lion mating success is determined by the number of mates they can acquire. Larger males are more successful at maintain larger territories. Females remain in one territory for the duration of the mating season and larger territories support more females than smaller territories. Additionally, the most successful males will fast during mating season to remain present in their territory at all times. If they leave to hunt they risk loss of their territory and access to all the females present in it. Which of the following best describes sexual selection in this species? a. Males likely engage in male-male combat to maintain territories. b. Intersexual selection is likely stronger than intrasexual selection. c. Sexual selection on the females is stronger than on the males. d. Females will mate with smaller males at a higher frequency than larger malesarrow_forwardDescribe and give an example of a dominance hierarchy. What role does it play in social behavior? Give a human parallel, and describe its role in human society. Are the two roles similar? Why or why not? Repeat this exercise for territorial behavior in humans and in another animal.arrow_forward
- Mark each statement as True/ False while describing frequency dependent, frequency independent and sexual selection. In negative frequency selection, rare phenotypes are selected against In positive frequency selection, the more common phenotype is selected for The long mane of the male lion which is not present in females is an example of sexual dimorphism An example of the handicap principle can be seen in the similar body forms of male and female birds such as the mourning dove The antlers seen in male antelope, caribou, and mountain goats are example of sexual dimorphismarrow_forwardConsider the following argument: Altruistic behavior in groups of related individuals is most likely driven by kin selection since related individuals would share DNA. Which of the following pieces of evidence would be most likely to weaken this argument? Data showing that only distantly related individuals are most likely to perform altruistic behaviors in order to protect each other Data showing that food gifts are given more common among family members than between unrelated individuals in a group Data showing that individuals that share a higher percentage of DNA in a group tend to show the most altruistic behavior between themselves Data showing that the more frequent an allele of a gene occurs in a population, the more likely that population performs altruistic behaviorsarrow_forwardNormally, male blue ducks only try to mate with females of their own species. A researcher swapped eggs between the nests of blue ducks and red ducks (a different species) and found that if male blue ducks were raised by female red ducks, later in life they only tried to mate with female red ducks. Which type of learning did this experiment demonstrate? Group of answer choices Sexual imprinting Filial imprinting Social learning Habituation Social learning Habituationarrow_forward
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