What do hybrid zones provide an opportunity to investigate? A hybrid zone allows researchers to see what happens when closely related species come together. Reproductive barriers may be strengthened or weakened, depending on environmental and genetic factors.
Chapter 24 Biology Flashcards – Quizlet
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What is a hybrid zone properly defined as ____?
A hybrid zone exists where the ranges of two interbreeding species or diverged intraspecific lineages meet and cross-fertilize.
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What are hybrid zones quizlet?
Hybrid zone. A region where members of different species meet and mate; lacking complete reproductive barriers.
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What are the possible outcomes of a hybrid zone?
Transient hybrid zones are ephemeral, and outcomes include (a) fusion of parental populations, (b) extinction of one of the parental types, or (c) speciation via “reinforcement.” In contrast, stable hybrid zones may persist for hundreds or thousands of generations.
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Which statement is true of hybrid zones?
Which statement is true of hybrid zones? Limited interbreeding occurs between two closely related species.
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What is a hybrid zone quizlet?
define hybrid zone. a region in which members of different species meet and mate producing at least some offspring of mixed ancestry.
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What is an example of hybrid zone in biology?
The hybrid zones for the grizzly bear and polar bear would be the geographic regions where the two are coming into contact with one another. For example, a bear believed to be a grolar was shot in Arviat, which is a community near Hudson Bay where grizzly bears and polar bears overlap.
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Which statement is true of hybrid zones quizlet?
Which statement is true of hybrid zones? Limited interbreeding occurs between two closely related species. Over time, evolution of a strong reproductive barrier may fully separate the species or the species may continue to hybridize, or the two species may fuse into a single species.
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What is hybrid zone stability?
For a hybrid zone to be stable, the offspring produced by the hybrids have to be less fit than members of the parent species.
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What is the likely outcome in a hybrid zone where fusion is occurring?
Fusion: members of the two lineages mate together, forming hybrids with normal fitness, and eventually collapse into one species. Note that since independent evolution has been occurring while the two populations were separate, resulting in a linage that will not be identical to the ancestral lineage.
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What are the possible outcomes when different species or populations come together in a hybrid zone?
Depending on the fitness of the hybrid offspring relative to the parents, the two species may either stay as two distinct species (reinforcement), or become one species again ( reconnection ).
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What are the possible outcome of species hybridization?
Various outcomes of hybridization: (a) hybrid swarm; (b) a narrow hybrid zone maintained either by higher fitness of hybrids relative to parental populations at the boundary between two habitats (bounded hybrid superiority), extrinsic (exogenous) selection against alleles adapted to the opposite habitats, or intrinsic …
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What are the possible scenarios that might happen after the formation of a hybrid zone?
Compare and contrast reinforcement, fusion and stability. These are the three possible outcomes of hybrid zones over time.
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What is a hybrid zone in biology quizlet?
Hybrid zone. A region where members of different species meet and mate; lacking complete reproductive barriers.
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What is a hybrid zone biology?
Hybrid zones are regions where genetically distinct populations meet, mate, and produce at least some offspring of mixed ancestry. Historically, interest in hybrid zones has focused on understanding their origins, dynamics, and, ultimately, their fate.
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What is a hybrid zone in speciation?
Hybrid zones are areas where genetically distinct populations meet, mate, and leave offspring of mixed ancestry. The majority of hybrid zones are probably maintained by a balance between dispersal and selection against admixture.
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What occurs in a hybrid zone quizlet?
What occurs in a hybrid zone? A hybrid zone is formed by members of a population mating with individuals of a different population. Which statement about polyploidy is correct? -Polyploid and diploid populations hybridize readily.
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What is meant by hybrid zones?
Hybrid zones are regions where genetically distinct populations meet, mate, and produce at least some offspring of mixed ancestry. Historically, interest in hybrid zones has focused on understanding their origins, dynamics, and, ultimately, their fate.
Error message | View complete answer on https://www.oxfordbibliographies.com
What is a hybrid zone in speciation?
Hybrid zones are areas where genetically distinct populations meet, mate, and leave offspring of mixed ancestry. The majority of hybrid zones are probably maintained by a balance between dispersal and selection against admixture.
Error message | View complete answer on https://www.sciencedirect.com
What are hybrid zones quizlet?
Hybrid zone. A region where members of different species meet and mate; lacking complete reproductive barriers.
Error message | View complete answer on https://quizlet.com
What is an example of hybrid zone in biology?
The hybrid zones for the grizzly bear and polar bear would be the geographic regions where the two are coming into contact with one another. For example, a bear believed to be a grolar was shot in Arviat, which is a community near Hudson Bay where grizzly bears and polar bears overlap.
