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Loose-leaf Version for What Is Life? A Guide to Biology 4E & LaunchPad for What is Life? A Guide to Biology 4E (Twelve Month Access)
4th Edition
ISBN: 9781319154639
Author: Jay Phelan
Publisher: W.H. Freeman & Co
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Chapter 10, Problem 4MC
Summary Introduction
Introduction:
Founder effect occurs when a group of migrating organisms create a population with new alleles, in a place that was previously isolated.
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What condition(s) is/are necessary for the development of both antagonistic and mutualistic coevolutionary relationships?A. Intimate pairwise interactions with one or more species.B. The agents of selection that are relevant to the populations must evolve.C. Frequency-dependent selection.D. All of the above are necessary for the development of coevolutionary relationships.
A small number of animals moves away from a large ancestral population on the continental mainland and colonizes an island. Which of the following is likely to occur?
A. Genetic diversity will decrease on the mainland, because of a population bottleneck.
B. Alleles that were more rare on the mainland are likely to become more common on the island, because of the founder effect.
C. Genetic diversity will be lower on the island than the mainland, because of the founder effect.
D. Mutations rates will increase on the island, in response to selection pressures in the new environment.
Which of the following statements correctly describes the conditions of microevolution?
Select one:
a. Mutations happen randomly, and the environment provides selective pressure.
b. Mates are chosen based on specific traits, and the bottleneck effect is prevented.
c. Genes to flow from one population to another, and random mating occurs.
d. The population is closed, and individuals are not allowed to immigrate or emigrate
Chapter 10 Solutions
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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
- Over the past several decades, natural selection has caused populations of Staphylococcus aureus (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aureus populations? A. Horizontal gene transfer would increase B. The populations will begin colonizing new environments. C. The frequency of resistant forms will definitely increase in these populations. D. They will go extinct without the antibiotic. E. The frequency of nonresistant forms will increase in these populations.arrow_forwardThe biological species concept emphasizes whether populations a. look the same. b. have similar biochemical pathways. c. can have gene flow between them. d. share common ancestry. e. have similar ecological requirements.arrow_forwardGene flow depends on a. migration. b. the ability of migrant alleles to be passed to subsequent generations. c. genetic drift. d. both a and b.arrow_forward
- Define a. mutation b. natural selection c. founder effect d. bottleneck e. gene flow f. nonrandom matingarrow_forwardThepopulations of Chihuahua spruce (Picea chihuahuana) have been fragmented due tochanging climatic conditions. This has resulted in:a.stabilizing selection.b.large population sizes.c.an increase in genetic diversity within populations.d.genetic drift.e.all of the choices apply.arrow_forwardA chance event occurs that causes a population to lose some individuals (they died); hence, a loss of alleles in the population results froma. mutation.b. migration.c. selection.d. genetic drift.arrow_forward
- The 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_forwardAdaptation can best be described as A. The change in the genetic characteristics of a population of organisms over time B. Evolutionary changes on a large scale C. Gives us Genotype frequency of a population that is not evolving D. Any feature of the organism that leads to improvement in performance in the environmentarrow_forwardGenetic variations in natural populations develop due to: Select one: A. random mutations of the DNA. B. changes in diet. O C. environmental catastrophies. D. changes in the environment. E. individual activities.arrow_forward
- Much research on extinction has focused on small populations, which are vulnerable for numerous reasons. A cyclical chain of events causing a small population to decline even further and become vulnerable to processes that lead to extinction is called an extinction vortex. Which of the following is not one of the factors leading to this phenomenon? A. Inbreeding between individuals in the population B. Little genetic variation in the population C. low tolerance to environmental stochasticity D. metapopulations with high connectivity E. low fitness of individuals within the populationarrow_forwardWhich of the following is an advantage of sexually reproducing populations over asexually reproducing populations? A. Sexually reproducing populations produce genetically identical offspring. B. Sexually reproducing populations require partners to reproduce. C. Sexually reproducing populations are more resilient against the effects of harmful mutations. D. Sexually reproducing populations do not require partners to reproduce.arrow_forwardPresent-day patterns of biodiversity and genetic diversity reflect past population genetics processes. Which of the following is the most likely to have had a MAJOR contribution to present day species diversity? a. large populations b. random genetic drift c. meiosis d. emigration e. inbreedingarrow_forward
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