BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 53, Problem 3A
Summary Introduction
To distinguish:
Between reciprocity and kin selection in a field study. Also explain, whether an altruistic act is “costly” to an individual who performs it, in the context of natural selection.
Introduction:
Altruism is an animal behavior that benefits other organism at its own cost. The altruism of an individual will be selected by nature as its sacrificing behavior will lead to an increase in the propagation of its own alleles through kin selection. But altruism is favored only when the benefit gained from the altruistic behavior is more than the fitness cost of the animal showing altruism.
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Chapter 53 Solutions
BIOLOGY
Ch. 53.1 - Prob. 1LOCh. 53.1 - Prob. 2LOCh. 53.1 - Prob. 3LOCh. 53.2 - Prob. 1LOCh. 53.2 - Prob. 2LOCh. 53.3 - Prob. 1LOCh. 53.3 - Prob. 2LOCh. 53.3 - Prob. 3LOCh. 53.4 - Prob. 1LOCh. 53.4 - Prob. 2LO
Ch. 53.4 - Prob. 3LOCh. 53.5 - Prob. 1LOCh. 53.5 - Prob. 2LOCh. 53.5 - Prob. 3LOCh. 53.6 - Prob. 1LOCh. 53.7 - Define migration.Ch. 53.7 - Prob. 2LOCh. 53.7 - Prob. 3LOCh. 53.8 - Prob. 1LOCh. 53.8 - Prob. 2LOCh. 53.8 - Prob. 3LOCh. 53.9 - Prob. 1LOCh. 53.9 - Prob. 2LOCh. 53.10 - Prob. 1LOCh. 53.10 - Prob. 2LOCh. 53.11 - Prob. 1LOCh. 53.11 - Prob. 2LOCh. 53.11 - Prob. 3LOCh. 53.12 - Prob. 1LOCh. 53.12 - Prob. 2LOCh. 53.12 - Prob. 3LOCh. 53.13 - Prob. 1LOCh. 53.13 - Prob. 2LOCh. 53.13 - Prob. 3LOCh. 53 - Prob. 1DACh. 53 - Prob. 2DACh. 53 - Prob. 3DACh. 53 - Prob. 4DACh. 53 - Prob. 5DACh. 53 - Prob. 1IQCh. 53 - Prob. 2IQCh. 53 - Prob. 3IQCh. 53 - What factors might be responsible for the slight...Ch. 53 - Prob. 1UCh. 53 - Prob. 2UCh. 53 - The study of song development in sparrows showed...Ch. 53 - Prob. 4UCh. 53 - Prob. 5UCh. 53 - Prob. 6UCh. 53 - Prob. 7UCh. 53 - Prob. 8UCh. 53 - In the haplodiploidy system of sex determination,...Ch. 53 - Prob. 10UCh. 53 - Prob. 11UCh. 53 - Prob. 1ACh. 53 - Refer to figure 54.25. Six pairs of birds were...Ch. 53 - Prob. 3ACh. 53 - Prob. 1SCh. 53 - Behavioral genetics has made great advances from...Ch. 53 - If a female bird chooses to live in the territory...
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- Which of these is the least acceptable explanation for how an altruistic gene might spread in a population? a. Selection for a gene that benefits the individuals’ relatives b. Selection for helping individuals who might return the favor c. Selection for genes that benefit the species d. Selection for groups that are more cooperative than other groupsarrow_forwardAssume you are studying a population of hummingbirds. You discover that the smallest hummingbirds can't keep their eggs warm and those eggs tend to fail. You also discover the largest hummingbirds tend to accidentally crush their eggs, so those eggs fail. The medium-size hummingbirds therefore have the highest fitness. What type of selection would this result in? a. Directional selection b. Sexual selection c. Disruptive selection d. Stabilizing selectionarrow_forwardTo say that a feature is adaptive is unsatisfying unless we have some idea of what it is adaptive for: by what mechanism did it increase fitness? What is its function?arrow_forward
- According to proponents of behavioral ecology, Group of answer choices infanticide is beneficial for the social group individuals consciously behave in ways that ensure their fitness individuals act to enhance the survival of their species Individuals choose certain environments based upon the likelihood of carrying out aggressive behavior behaviors have evolved through the operation of natural selectionarrow_forwardAn individual bird may behave apparently altruistically in a way that decreases its own fitness (by cost C) yet increases the fitness of another individual or set of individuals (by benefit B each). According to Hamilton’s Rule, if natural selection favors this behavior to help four grandchildren, it should also be favored when the recipients are Group of answer choices eight first cousins All the given answers are correct two siblings four niecesarrow_forwardWhich piece of evidence would best support the argument for kin selection as a mechanism for the evolution of altruistic behavior? an antelope gets separated from the herd and killed by predators a penguin protects its chick from seagulls a clown fish helps clean parasites off of a sea anemone a hippo stops a crocodile from eating an antelopearrow_forward
- Which of the following situations will lead to natural selection? a. The seeds of two plants land near each other and one grows larger than the other. b. Two types of fish eat the same kind of food, and one is better able to gather food than the other. c. Male lions compete for the right to mate with females, with only one possible winner. d. all of the abovearrow_forwardWhich statement is accurate about natural selection? It is a biological process that prevents species from adapting to significant changes in their environments. It is a biological process that leads a population to have a widespread expression of an advantageous trait. It is a biological process that allows a population to have a competitive advantage in many environments. It is a biological process that causes certain traits to be expressed less with each subsequent generation.arrow_forwardIn a population that had mice ranging in color from very light to very dark, which type of selection would result in a population of mostly dark mice? Group of answer choices Directional selection Disruptive selection Stabilizing selectionarrow_forward
- In your own words, how does Competition and selection support natural selection? Use at least 1 example from the Beaks of Finches lab in your answer.arrow_forwardan insect population lives on trees. over time, more trees with light colored bark grown in their habitat, and the instect population shifts its average color to become lighter so that the insects are better camouflaged when on trees. this is an example of what type of selection?arrow_forwardAccording to Hamilton’s rule,(A) natural selection does not favor altruistic behavior thatcauses the death of the altruist.(B) natural selection favors altruistic acts when the resultingbenefit to the recipient, corrected for relatedness, exceedsthe cost to the altruist.(C) natural selection is more likely to favor altruistic behaviorthat benefits an offspring than altruistic behavior thatbenefits a sibling.(D) the effects of kin selection are larger than the effects ofdirect natural selection on individuals.arrow_forward
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