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 3VCQ
Figure 18.23 Which of the following statements is false?
- Punctuated equilibrium is most likely to occur in a small population that experiences a rapid change in its environment.
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Students have asked these similar questions
Which of the following statements is false?
a.
Gradual speciation is most likely to occur in a large population that lives in a stable climate.
b.
Punctuated equilibrium is unlikely to occur in a large population that lives in a stable climate.
c.
Gradual speciation and punctuated equilibrium both result in the divergence of species.
d.
Gradual speciation is most likely to occur in a small population that experiences a rapid change in its environment.
Which of the following species would have the greatest chance of going extinct?
a species with a slow reproduction rate and very little genetic variation living in a changing environment
a species with a fast reproduction rate and lots of genetic variation living in a changing environment
a species with a slow reproduction rate and very little genetic variation living in a stable environment
a species with a fast reproduction rate and lots of genetic variation living in a stable environment
What is the nature of the reproductive barrier between a species that mates at dawn (sunrise) and a species that mates at dusk (sunset)?
gametic
temporal
habitat
behavioral
mechanical
A mountain range divides a freshwater snail species into two isolated populations. Erosion eventually lowers the range and brings the two populations together again, but when they mate, the resulting hybrids all produce sterile young. This scenario is an example of
allopatric speciation
gradualism
punctuated equilibrium
extinction
sympatric speciation
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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- Make or create one question about Speciation and ecology (Nature of species, reproductiva isolation, genetic drift and natural selection, geography of speciation, adaptive radiation and biological diversity, the peace of evolution). Just one question about any of this topics.arrow_forwardWhich of the following scenarios best explains how resource partitioning can lead to adaptive radiation? The lack of competition between individuals leads to better survival and reproduction rates. The utilization of different resources requires different adaptations, selecting for different traits. The lack of competition leads to a more balanced ecosystem, resulting in more offspring. There is no connection between adaptive radiation and the resource partitioning in nature.arrow_forwardWhich of the following forces of evolution tends to slow down population divergence and prevent speciation? Group of answer choices Sexual selection Genetic drift Gene flow Mutation Natural selectionarrow_forward
- Which part of these statements isn't right ? A species is a group of organisms that can potentially interbreed with one another to produce viable, fertile offspring. Speciation is when two new species form from one original one. Sympatric speciation occurs when there is a geographic separation of a population. Allopatric speciation occurs while the population remains in the same area. Adaptive radiation occurs when one species evolves into many to fill several different niches. Natural selection requires traits to be passed from parent to offspring, more offspring are produced than can survive creating competition, and inherited traits vary among offspring. Fossils, Anatomy and embryology, biogeography, and molecular biology all provide support for the theory of evolution. Evolution can be driven by many different things. Mutations are changes in DNA that create new alleles in a population. Gene flow is the flow of alleles in and out of a population resulting from the migration…arrow_forwardAt the edge of the Arctic Circle, owls prey on field mice. Occasionally, in a litter of white field mice, a brown mouse appears. Because of greenhouse warming, the snow melts, changing the environment to shades of brown. What process causes the population to change colors? artificial selection natural selection migration behavioral isolationarrow_forwardA group of one species of bacteria are exposed to an antibiotic. The normal bacteria die but some are resistant to the antibiotic and start multiplying. The resistant bacteria flourish and now make up the majority of the population. This is an example of what? Speciation Reduction of Gene Flow Natural Selection Geographic Isolationarrow_forward
- Two species evolve different preferences for which tree to live on. The trees are found in the same forest and thus two species are produced from the same geographic location. This is best described as which of the following? Sympatric speciation Vicariance speciation Dispersal speciation Allopatric speciationarrow_forwardA poodle (Canis lupus familiaris) and a gray wolves (Canis lupus) can interbreed to produce viable and fertile offspring. These dogs are very similar genetically , although their are quite different in appearance. Which species concept is most likely to place poodles and wolves together into a single species? Question 19 options: biological alone morphological alone morphological and phylogenetic phylogenetic alone biological and phylogeneticarrow_forwardIn sympatric speciation (fill in the blank) can result in (fill in the blank) and lead to formation of new species from a population that (fill in the blank) fill in the blank with the following: is geographically isolated, gene flow, reproduction isolation, is in the same environment, genetic drift, or ecological isolationarrow_forward
- A factor that is always necessary for the formation of a new spieces is reproduction at different times geographic barriers different mating behaviors reproductive isolation Genetic differences between population tend to be reduced by mutation the bottleneck effect gene flow the founder effect Which of the following factor would not contribute to allopatric speciation a population is geographically separated, leaving one small population in which genetic drift occurs different mutations begin to distinguish the gene pools of the separated populations a population becomes geographically isolated from the original population gene flow between the two separated populations continues to occur an isolated population is exposed to different selective pressures than the original population Male lion having a mane while female lion is an example of intrasexual selection hybridization intersexual selection sexual dimorphismarrow_forwardHow is sympatric speciation different from allopatric speciation? Group of answer choices Allopatric speciation requires a geographic barrier, while sympatric speciation occurs in one place Allopatric speciation results in hybrids, while sympatric speciation does not Allopatric speciation is a result of behavioral isolation, while sympatric speciation is a result of habitat isolation Allopatric speciation occurs in one place, while sympatric speciation requires a geographic barrierarrow_forwardWhat is adaptive radiation? Large-scale evolutionary patterns and trends in speciation The event when a species no longer has living members A lineage undergoes a burst of genetic divergences that gives rise to many species Changes in allele frequency that are always occurring in natural populationsarrow_forward
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