Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 25, Problem 18TYK
What is meant by the concept of species selection?
- a. Characteristics that increase the probability that a species will separate into two or more species will accumulate in the most successful species.
- b. Natural selection can act on the species level as well as on the population level.
- c. The species that last the longest and
speciate the most often influence the direction of evolutionary trends. - d. The colonization of new and diverse habitats can lead to the adaptive radiation of numerous species.
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Students have asked these similar questions
If reinforcement is weak and hybrids are not completely infertile,
a. genetic divergence between populations may be overcome by gene flow.
b. speciation will occur 100% of the time.
c. gene flow between populations will be impossible.
d. the speciation will be more likely than if hybrids were completely infertile.
The 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.
Which of the following statement about the outcome of the evolution of a new species through hybridization is false?
a.The new species may have traits that allow it to inhibit environments different from both parental species.
b.The new species is always an intermediate of the two parental species
c.The new species may have greater genetic diversity and greater trait diversity than the parental species.
d.None of the above
What are the two ways of looking into evolution in detail?
a.Micro frequency change and ascent with modification
b.Genotypic and phenotypic modification
c.DNA frequency change and inheritance modification
d.Allele frequency change and descent with modification
Natural selection increases the frequencies of advantageous alleles and decreases deleterious alleles' frequencies. What are the three categories of natural selection depending on the favored traits?
a.Directive, selective and native
b.Indicative, normative and fixative
c.Directional, stabilizing and…
Chapter 25 Solutions
Study Guide for Campbell Biology
Ch. 25 - Why do we say that, for life to have begun, the...Ch. 25 - Prob. 2IQCh. 25 - Prob. 3IQCh. 25 - Prob. 4IQCh. 25 - Prob. 5IQCh. 25 - a. Mammals originated 180 mya but did not change...Ch. 25 - Prob. 7IQCh. 25 - a. According to the model of species selection,...Ch. 25 - Prob. 1SYKCh. 25 - Label the eons, eras, and key events shown on the...
Ch. 25 - Describe three major processes that have...Ch. 25 - Prob. 4SYKCh. 25 - The primitive atmosphere of Earth may have favored...Ch. 25 - Prob. 2TYKCh. 25 - Prob. 3TYKCh. 25 - The half-life of carbon-14 is 5,730 years. A...Ch. 25 - Prob. 5TYKCh. 25 - Prob. 6TYKCh. 25 - Prob. 7TYKCh. 25 - Look back at the Geologic Record in Table 25.1....Ch. 25 - Prob. 9TYKCh. 25 - According to the endosymbiont theory, a. the first...Ch. 25 - Prob. 11TYKCh. 25 - Prob. 12TYKCh. 25 - Prob. 13TYKCh. 25 - Prob. 14TYKCh. 25 - Prob. 15TYKCh. 25 - Prob. 16TYKCh. 25 - Prob. 17TYKCh. 25 - What is meant by the concept of species selection?...
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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
- 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.arrow_forwardDefine a. mutation b. natural selection c. founder effect d. bottleneck e. gene flow f. nonrandom matingarrow_forwardWhat 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.arrow_forward
- What is the correct sequence for the organic evolution as proposed by Darwin and Wallace? A. Overproduction, constancy of population size, variations, natural selection. B. Variations, natural selection, overproduction, constancy of population size.. C. Overproduction, variations, constancy of population size, natural selection. D. Variations, constancy of population size, overproduction, natural selection.arrow_forwardConsider this example. Shorebirds on the Eastern coast of North America feed on the mollusks and tiny crabs along the shore. Birds with tougher beaks are better adapted to crack open the shells of the mollusks, and birds with sharper beaks are better adapted to pierce the shells of crabs. Over time, the shorebirds become two separate species that no longer breed with one another. What type of speciation has occurred? A. Sympatric speciation B. Adaptive speciation C. Microevolution speciation D. Allopatric speciationarrow_forwardNatural selection occurs when which of the following conditions are met? Group of answer choices a.Variations between individual organisms lead to differential survival chances. b.The conditions in an ecosystem support a wide range of living organisms c.Individual organisms depend on each other to obtain available resources. d. Habitat and nutrient resources in an area are plentiful over a long period of time.arrow_forward
- Which of the following traits does not describe a r-selected species? A. rapid development B. low parental investment C. high reproductive rates D. short life spans E. late maturationarrow_forwardWhich of the following examples refers to microevolution? A.In a population of mice, individuals with dark fur are cryptic against the dark soil in their habitat and have higher fitness. Many generations later, the proportion of the population with the allele for dark fur has increased B. Two populations of the same species are reproductively isolated (no allels/individual , moving between the populations) Over many generations they become so different that they diverge into separate species C.In a population of lizards, a random event causes one allele to be lost from the population. So, future generations have a lower proportion (zero) of that alele.arrow_forwardDirection: Read each question carefully and choose the correct answer from the choices below. A. Temporal isolation B. Mechanical isolation C. Gametic isolation D. Allopatric speciation E. Parapatric isolation 1. It occurs when the groups that evolved to be separate species are geographic neighbors. 2. The differences in reproductive organs prevent successful interbreeding 3. The different groups may not be reproductively mature at the same season, or month or year. agoXMO 4. It occurs when some members of a population become geographically separated from the other members thereby preventing gene flow. 5. It is the incompatibilities between egg and sperm prevent fertilization.arrow_forward
- Lamarck's hypothesis about how species change over time was Group of answer choices a. based on the assumption that an organism's phenotype was determined by both its genes and the environment b. correct because it proposed that characteristics acquired in one's lifetime could be passed on to offspring c. ahead of its time because it explicitly focused on changes in genotype frequencies in a population d. based on the assumption that an organism's phenotype was determined solely by its genes e. incorrect because it proposed that characteristics acquired in one's lifetime could be passed on to offspring tarrow_forwardAlfred Russel Wallace and Charles Darwin argued that evolution by means of natural selection involves all of the following steps except: a. variation is present in all species b. species can produce more offspring than the environment can sustain c. all individuals within a species have equal chances to improve their fitness d. those individuals that are more fit will survive and reproduce in the greatest numbers e. over time, the species will evolve as the more fit individuals replace the less fit individualsarrow_forwardAs a mechanism of evolution, natural selection can be most closely equated with a. random mating. b. genetic drift. c. unequal reproductive success. d. gene flow.arrow_forward
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