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
Group of answer choices
intersexual selection
intrasexual selection
the direct benefits model
Hamilton-Zuk hypothesis
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The conscious selection of a mate is called:
Question 5 options:
Monogamy
Polygamy
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Random Mating
Question 6 (1 point)
How does sonar affect some species' ability to hunt?
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Sonar incorporates neither light nor sound.
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Sonar incorporates both light and sound.
Question 7 (1 point)
Which of the following species undergoes random mating?
Question 7 options:
Lions
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Tigers
Question 8 (1 point)
Which of the following associative behavior specifically refers to a relationship in…
Which one of the following would be considered an example of sexual selection?
Similar death rates due to disease in both sexes of a species
The presence of both male and female reproductive structures within each individual of a species
Longer tailed males of a bird species mating more frequently on average than shorter tailed males of
the same species
Higher offspring survival in individuals homozygous for one type of allele compared to individuals
homozygous for a different allele at the same locus
The ability of a species to utilize either asexual or sexual reproduction
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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- 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_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_forwardWhich of these interactions are examples of sexual selection? Select all that apply. A change in food resources on an island favors finches with medium-sized beaks. Finches with small and large beaks disappear from the island after a few generations. Female flies prefer to mate with males that have longer eyestalks. These eyestalks provide no survival advantage, but longer eyestalks become more common over generations. Male seals compete for territory and access to clusters of female seals. The more aggressive male seals tend to secure the largest territories and clusters.arrow_forward
- Which of these interactions are examples of sexual selection? Select all that apply. - Female flies prefer to mate with males that have longer eyestalks. These eyestalks provide no survival advantage, but longer eyestalks become more common over generations. -Male seals compete for territory and access to clusters of female seals. The more aggressive male seals tend to secure the largest territories and clusters. -A change in food resources on an island favors finches with medium-sized beaks. Finches with small and large beaks disappear from the island after a few generations. -Green butterflies are less likely to be eaten than yellow butterflies due to their color. Green butterflies become more numerous than yellow butterflies in the population.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_forwardWhich of the following observations or hypotheses is most consistent with the Bateman-Trivers paradigm? males attempt to secure large territories to attract many females none of these are consistent with the Bateman-Trivers Hypothesis sperm are frail and few can actually fertilize an egg male spiders mate only once are sometimes eaten by females O females seek many mates to ensure genetic diversity in their youngarrow_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_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_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_forward
- Assortive 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_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
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