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 15RQ
Which term is used to describe the continued divergence of species based on the low fitness of hybrid offspring?
- reinforcement
- fusion
- stability
- punctuated equilibrium
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Students have asked these similar questions
Assume you are studying secondary contact in two species of birds. You notice that hybrids are produced and that much of the DNA of each species is becoming more similar over time. The likely end point of this process is which of the following?
Fusion
Evolution of reproductive isolation
Reinforcement
Stable and minimal hybrid production
Which of the following is not a post-zygotic isolating mechanism?
Group of answer choices
zygote mortality
hybrid sterility
temporal isolation
F2 fitness
Hybrid breakdown refers to which situation?
Group of answer choices
Two species can hybridize but their offspring do not develop fully or are frail and will not survive to reproduce.
Two species can hybridize but their offspring are sterile.
None of the above
Two species can hybridize and their offspring are ok and can have offspring, but the next generation are more likely to die or will be sterile.
Two species can hybridize and fuse back into one species.
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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- Two populations of the same species of frogs have been separated by a mountain range for thousands of years. The females from one population are no longer attracted to the mating calls of the males from the other population. This is an example of which type of reproductive isolation mechanism? Temporal isolation Behavioral isolation Mechanical isolation Hybrid viabilityarrow_forwardThe condition in which there are barriers to successful interbreeding between individuals of different species in the same community is referred to as * latent variations sterility structural differences reproductive isolationarrow_forwardWhat are factors which causes two hybrid populations to separate? Reinforcement Fusion Stabilityarrow_forward
- Two sympatric species of wildflowers grow the same habitat but hybrids are extremely rare in nature despite the facts that viable hybrids can easily be produced in the lab. The rarity of hybrids is hypothesized to be the consequence of the difference in the blooming season because one species blooms in April while the other blooms in June. This hypothesis is referring to what type of reproductive isolation? Question 6 options: Mechanical isolation Behavioural isolation Temporal isolation Habitat isolation Gametic isolationarrow_forwardThe reproductive isolating mechanism in which two closely related species live in the same geographic area but reproduce at different times is (a) temporal isolation (b) behavioral isolation (c) mechanical isolation (d) gametic isolation (e) hybrid inviabilityarrow_forwardOver many generations, there is a good chance that an advantageous gene will be shared by every organism of the same species or that a new species will emerge. These long-term outcomes are called: population evolution hybridization adaptationarrow_forward
- Which of these outcomes are examples of reproductive isolation? Select all that apply. Individuals of different species are physically compatible and can engage in sex Hybrid individuals cannot produce offspring Hybrid individuals or their offspring have similar fitness to the original species Reproduction occurs at different times Mating occurs but fertilization does not occurarrow_forwardA ring species is composed by populations arranged in a circle around a barrier with one boundary characterized by reproductive isolation. It is an example of: ORIGINAL POPULATION GENE FLOW FAILURE TO REPRODUCE GEOGRAPHIC BARRIER Allopatric speciation Sympatric speciation Ecological speciation Isolation by distancearrow_forwardThe biological species concept distinguishes two species based on the degree of genetic exchange between their gene pools. True Falsearrow_forward
- True or false? The biological species concept distinguishes two species based on the degree of genetic exchange between their gene poolsarrow_forwardWhat are characteristics of sympatric speciation? Select all that apply. Reproductive isolation necessary to end gene flow Divergence within a population leads to speciation Absence of a physical barrier Presence of a physical barrier Reproductive isolation unnecessary to end gene flowarrow_forwardAssume you are studying a population of ocean shrimp that reproduce asexually. You sequence the ocean shrimp and the species that is their closest living relative that reproduces sexually. You find that the asexually reproducing species has a higher number of mutations in the genome. This finding would provide support for which of the following ideas? Linkage disequilibrium Stabilizing selection Disruptive selection Muller's ratchetarrow_forward
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