Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Question
Chapter 26.2, Problem 2CYL
Summary Introduction
To explain:
Why natural selection has favored the evolution of aggressive signals and displays dominance hierarchies and territoriality.
Introduction:
Natural selection occurs due to mutation, migration and genetic drift in a population. It leads to cause evolution. Natural selection is responsible for variation among species in a biological population. In this process, organisms that are adapted to changing environment tend to survive and reproduce successfully.
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Students have asked these similar questions
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
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.
The continued evolutionary exaggeration, across generations, of a sexual display trait
(e.g., a trait used by males in attracting mates, like the peacock's tail) is most likely
due to:
a) stabilizing fecundity selection
O b) directional sexual selection
c) genetic drift
d) heterozygote advantage
e) directional viability selection
Chapter 26 Solutions
Biology
Ch. 26.1 - Prob. 1TCCh. 26.1 - Prob. 1CYLCh. 26.1 - Prob. 2CYLCh. 26.1 - Prob. 3CYLCh. 26.2 - Prob. 1CYLCh. 26.2 - Prob. 2CYLCh. 26.3 - Prob. 1CYLCh. 26.3 - Prob. 2CYLCh. 26.3 - Prob. 3CYLCh. 26.4 - Does symmetry have a scent? In one study,...
Ch. 26.4 - compare the advantages and disadvantages of...Ch. 26.4 - Prob. 2CYLCh. 26.5 - Prob. 1TCCh. 26.5 - Prob. 2TCCh. 26.5 - Prob. 1CYLCh. 26.5 - Prob. 2CYLCh. 26.6 - Prob. 1CYLCh. 26.6 - Prob. 2CYLCh. 26.7 - list the advantages and disadvantages of living in...Ch. 26.7 - Prob. 2CYLCh. 26.8 - Prob. 1HYEWCh. 26.8 - Prob. 1CYLCh. 26.8 - Prob. 2CYLCh. 26.8 - Prob. 3CYLCh. 26.8 - Is our perception of human beauty determined by...Ch. 26 - Prob. 1MCCh. 26 - The benefits to an individual of living in a...Ch. 26 - Prob. 3MCCh. 26 - Prob. 4MCCh. 26 - Prob. 5MCCh. 26 - Prob. 1FIBCh. 26 - Prob. 2FIBCh. 26 - Prob. 3FIBCh. 26 - Prob. 4FIBCh. 26 - Prob. 5FIBCh. 26 - Prob. 6FIBCh. 26 - Prob. 1RQCh. 26 - Prob. 2RQCh. 26 - Prob. 3RQCh. 26 - Prob. 4RQCh. 26 - Discuss the advantages and disadvantages of group...Ch. 26 - Prob. 6RQCh. 26 - Prob. 1ACCh. 26 - Prob. 2ACCh. 26 - Prob. 3AC
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- 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_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_forwardIdentify whether each of the following scenarios is most likely to result in stabilizing, disruptive, or directional selection a) Beetles that emerge from hibernation too early are more likely to killed by frost, those that emerge too late will miss the chance to mate [Select ] b) Frogs with mating calls that are between 400 and 600 chirps per minute attract more mates than frogs with calls that are lower than 400 chirps per minute or greater than 600 chirps per minute [ Select ] c) Plants with the largest leaves are better able to gather sunlight in the rainforest [ Select ] d) Giraffes with longer necks can reach more leaves, but they have a harder time pumping blood from their heart up to their brain [Select] e) Mice with the lighter fur are better camouflaged from predators than mice with darker fur V [ Select ] stabilizing selection disruptive selection directional selectionarrow_forward
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