BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN: 9781305967359
Author: STARR
Publisher: CENGAGE L
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Chapter 40, Problem 11SA
Summary Introduction
Introduction:
Life histories have a genetic basis and are subject to natural selection. Most populations contain the combination of both r-selected and K-selected traits. One of the factors that affect life history traits is predation.
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Some females seem to prefer the green colouration and some females seem to prefer the blue colouration. What type of selection is this an example of?
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Selective pressures are those aspects of the environment that determine whether a gene mutation is helpful, what contributes to the selective pressure that determines the fur color of rock pocket mice
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The best argument for how an unprotected species can evolve to mimic a second protected species (distasteful or noxious) and thus obtain protection is by
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C. Individuals changing their diet to increase pigment production to look like the protected species
D. Natural selection for more advanced traits that are better to the inferior traits of organisms that do not look like the protected species
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Chapter 40 Solutions
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Ch. 40 - Most commonly, individuals of a natural population...Ch. 40 - The rate at which population size grows or...Ch. 40 - Suppose 200 fish are marked and released in a...Ch. 40 - Prob. 4SACh. 40 - For a given species, the maximum rate of increase...Ch. 40 - _______ is a density-independent factor that...Ch. 40 - Prob. 7SACh. 40 - Prob. 8SACh. 40 - Compared to the less developed countries, the...Ch. 40 - An increase in infant mortality will _______ a...
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- Identify the term that best matches the definition or description given. a. selective advantage b. variation f. selective pressure g. artificial selection h. extinct i. c. monoculture d. mimicry e. adaptation fitness j. mutation 71. human selection of particular traits to modify a population 72. structural differences between individuals 73. environmental conditions that select for certain characteristics and select against other characteristics 74. changes to the genetic material of an organism 75. planting of one species in a large area 76. disappear completely from Earth 77. one species looks like another species 78. a behaviour that helps an individual survive and reproduce in a particular environment 79. a genetic advantage that improves an organism's chance of survival 80. genetic contribution to the next generation by successful reproductionarrow_forwardSuppose two species of morning glories are reproductively isolated because in one species the flowers bloom in early April and in the other species they flower in mid-May. This would be an example of _______ isolation, which is a form of _______ isolation. a. habitat; prezygotic b. temporal; prezygotic c. temporal; postzygotic d. behavioral; postzygotic e. habitat; postzygoticarrow_forwardThe Grants have studied finches on the Galapagos Islabds for 40+ years. During times of drought there is less green/flowering vegetation available as a good source for the finches. This leaves only the hard seeds. The grants have found that during drought, finches with larger beaks survive at a higher rate because they can access food source. This would be an example of ____ A.Selective pressure B. good genes hypothesis C. handicap principle D. population variationarrow_forward
- A. Stabilizing Selection B. Disruptive Selection C. Directional Selection D. Normal Selection 26. A biologist studying wolves has collected data on the mass of meat caught per day from hunts by packs varying in size from 2 to 15 wolves. The data show that as pack size increases, the mass of meat available per pack member per day increases. Which additional study would provide evidence that pack hunting provides an advantage? A. Measure and compare the abili ty of wolves of varying ages to successfully engage in hunting. B. Observe whether an individual wolf hunts different types of prey than a pack of wolves hunts. C. Measure the ratio of male to female wolves engaging in hunting to see if it varies with pack size. D. Compare the average number of pups per litter that reach reproductive age for wolf packs of different sizes. luminate Education TM Inc.arrow_forwardThe Old Order Amish is a relatively small population of individuals found in the United States in Pennsylvania and Ohio. They are a very isolated population due to their strong religious beliefs and lifestyle that have continued for more than 200 years. They mostly select mates from within their own population, which has had significant effects on their gene pool.The effects on their gene pool is a result of a. non-random mating b. founder effect c. mutation d. bottleneck effectarrow_forwardBirds with average-sized wings survive storms better than those with longer wings or shorter wings. This illustrates _____. a directional selection b disruptive selection c the bottleneck effect d stabilizing selectionarrow_forward
- 6a. Fill in the table below with the expected characteristics of r vs K selected species. r-selected species K-selected species Timing of maturation Longevity Parental care Number of offspring Size of offspring 6b. Based on your table, would a species that provides long-term parental care and has few offspring be considered an r-selected or K-selected species? What is an example of such a species? 6c. Why is long-term parental care associated with having few offspring during a reproductive episode?arrow_forwardSpecies that have many offspring at one time are usually: a. r-selected b. K-selected c. both r- and K-selected d. not selectedarrow_forwardIn many bird species, sex is preceded by a courtship dance. If a male’s dance is unrecognized by the female, she will not mate with him. This is an example of______ . a. sexual selection c. reproductive isolation b. behavioral isolation d. all of the abovearrow_forward
- Species that have many offspring at one time are usually:a. r-selectedb. K-selectedc. both r- and K-selectedd. not selectedarrow_forwardAtlantic cod have experienced decades of overharvesting. As a result, the age of maturity of Atlantic cod populations have decreased, so that fish today reach sexual maturity early – at significantly smaller sizes than fish 50 years ago. From this, we can interpret that populations of Atlantic cod are experiencing. A. Directional selection B. frequency dependent Selection C. Disruptive Selection D. Genetic Drift E. Stabilizing Selection 2. In 1958, the average age to sexual maturity in the Atlantic cod population was 7.0 years. In 1959 there was a particularly large harvest of the Atlantic cod population. Fish that bred successfully that year had an average age of sexual maturity of 6.0 years. The difference between these values represents A. Mutation rate B. Selection Differential C. Response to selection D. Heritability 3. The difference in age at sexual maturity between the offspring of the fish that survived the harvest in 1959 (i.e. 6.2 years) and the population average before…arrow_forwardIt is believed that trichomes give an evolutionary advantage to plants when herbivory is high because the trichomes may be irritating to the animals that feed on these plants. In these situations, the selection pressure would favor plants with more trichomes. The experiment described above mimics this condition. What type of selection is represented here? A. Stabilizing B. Disruptive C. Directional selectionarrow_forward
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