Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 18, Problem 5RQ
Which of the following situations will lead to natural selection?
- The seeds of two plants land near each other and one grows larger than the other
- Two types of fish eat the same kind of food, and one is better able to gather food than the other
- Male lions compete for the right to mate with females, with only one possible winner
- all of the above
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During mating season, male rams compete with each other for access to females. This describes
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the direct benefits model
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Monogamy
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Question 6 (1 point)
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Question 7 (1 point)
Which of the following species undergoes random mating?
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Question 8 (1 point)
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Similar death rates due to disease in both sexes of a species
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Chapter 18 Solutions
Biology 2e
Ch. 18 - Figure 18.14 Which is most likely to survive,...Ch. 18 - Figure 18.22 If two species eat a different diet...Ch. 18 - Figure 18.23 Which of the following statements is...Ch. 18 - Which scientific concept did Charles Darwin and...Ch. 18 - Which of the following situations will lead to...Ch. 18 - Which description is an example of a phenotype? A...Ch. 18 - Which situation is most likely an example of...Ch. 18 - Which situation would most likely lead to...Ch. 18 - What is the main difference between dispersal and...Ch. 18 - Which variable increases the likelihood of...
Ch. 18 - What is the main difference between autopolyploid...Ch. 18 - Which reproductive combination produces hybrids?...Ch. 18 - Which condition is the basis for a species to be...Ch. 18 - Which situation is not an example of a prezygotic...Ch. 18 - Which term is used to describe the continued...Ch. 18 - Which components of speciation would be least...Ch. 18 - If a person scatters a handful of garden pea plant...Ch. 18 - Why do scientists consider vestigial structures...Ch. 18 - How does the scientific meaning of “theory” differ...Ch. 18 - Explain why the statement that a monkey is more...Ch. 18 - Why do island chains provide ideal conditions for...Ch. 18 - Two species of fish had recently undergone...Ch. 18 - Why can polyploidy individuals lead to speciation...Ch. 18 - What do both rate of speciation models have in...Ch. 18 - Describe a situation where hybrid reproduction...
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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
- Which of the following is NOT an example of sexual selection in the wild? * Peacocks showing off bright feathers to attract the peahens. Newts camouflaging in their environment so predators can't see them. Frogs singing loud songs to attract a mate. Rams butting heads and fighting to gain access to the females. INTL O 4:32 novo N42 Touch 4. %23 24 & backspace 4. 7 8 e r y ab f k enter shift C V alt ctrl altarrow_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_forwardYou are studying the mating patterns of a group of elephant seals. In the group, you believe that the five males will get equal access to the 100 females during mating season. If the Chi-square calculated value for this example is 2.6, what can you say about the results? Group of answer choices Some male seals mate with significantly more females while other male seals mate with fewer females. The null hypothesis is rejected There is no difference in the number of mates per male seal. The p-value is less than 0.05arrow_forward
- Match the scenario to the type of sexual selection: Question 10 male parrots wish to mate with a female. The female chooses to mate with the male that has the brightest tail feathers. Male giraffes perform mating dances. The ones that perform the dance better are chosen by the female as a mate. Male kangaroos fight each other, the winner claims the female to mate with. Male red-winged blackbird sing and display their feathers to establish their territories. All of the females in that territory will exclusively mate with that male. The impressive feathers of a male peacock are the result of this type of sexual selection All Answer Choices A. Intrasexual selection B. Intersexual selectionarrow_forwardWhich of the following is true of a peacock's tail: It is a result of intersexual selection It is an example of sexual dimorphism in the species It is a result of intrasexual selection all of the abovearrow_forwardAssortive mating generally leads to lower diversity because; Assortive mating actually increases diversity Individuals choose to mate with individuals who are dis-similar to themselves Individuals choose to mate with other similar individuals Individuals choose to mate later in lifearrow_forward
- Please solvearrow_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_forwardWhat is the relationship between reproductive value and strength of selection? when reproductive value is high, selection is weak when reproductive value is high, selection is strong there is no relationship; it is constantarrow_forward
- During 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_forwardThink about how we organized the mechanisms of sexual selection (mate competition vs. mate choice; resource-based choice vs. non-resource-based choice, etc.). Based on this organization, choose the pair of examples from the list below that are most closely matched in terms of mechanisms of sexual selection. Male red deer engage in physical contests to determine who mates with a female. Male mouse lemurs engage in scramble competition for female mates. Peahen (female) chooses to mate with a peacock that has large eyespots in the tail feathers of his magnificent display. Question 8 Think about how we organized the mechanisms of sexual selection (mate competition vs. mate choice; resource-based choice vs. non-resource-based choice, etc.). Based on this organization, choose the pair of examples from the list below that are most closely matched in terms of mechanisms of sexual selection. Male roadrunner presents female with lizard 'snack' during courtship. Male butterfly transfers sodium to…arrow_forwardWhich 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_forward
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