The phyletic graduallsm model OT speciation asserts that; Most speciation occurs allopatrically O Speciation is a slow and gradual process that occurs as species slowly become geographically separated speciation occurs in quickly and then is followed by periods with little if any change Most speciation occurs sympatrially

The phyletic graduallsm model OT speciation asserts that; Most speciation occurs allopatrically O Speciation is a slow and gradual process that occurs as species slowly become geographically separated speciation occurs in quickly and then is followed by periods with little if any change Most speciation occurs sympatrially

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter18: Evolution And The Origin Of Species

Section: Chapter Questions

Problem 3VCQ: Figure 18.23 Which of the following statements is false? Punctuated equilibrium is most likely to...

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Agrostis tenuis grasses tolerant of zinc metals in the soil (after evolving from metal-sensitive grasses near mine soils contaminated with zinc over the past 100 years), is an example of: allopatric speciation by vicariance allopatric speciation by dispersal peripatric speciation parapatric speciationE. sympatric speciation
Secondary contact only plays a role in some of the speciation modes. Name the mode(s) of speciation that is/are not affected by secondary contact.
How does one species diverge from another? (When do we call a group a new species—and how does that process happen?) Using anole lizards or another very specific example(s), compare and contrast microevolutionary processes with speciation. As you discuss speciation, be sure to compare and contrast sympatric speciation with allopatric speciation and say whether the example you’ve chosen is allopatric or sympatric.
What 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 flow
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.
A new species seems to be forming in areas where there is geographic separation between the divergent populations. If true, this would represent an example of: Peripatric speciation Genetic drift Sympatric speciation Adaptive radiation Allopatric speciation
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 speciation
A defining characteristic of allopatric speciation is Group of answer choices A. Geographic isolation. B. Aasexually reproducing populations. C. Occurance of natural selection. D. The appearance of new species within the distribution range of the parental species.
The difference between sympatric and parapatric speciation is ___ .a. parapatric speciation occurs only in velvet walking wormsb. sympatric speciation requires a barrier to gene flowc. the extent of overlap in ranged. reproductive isolation does not occur
What are the most common mechanisms of sympatric speciation and in which major group of organisms does this happen most often? Disti nguish between sympatric and allopatric and parapat r ic speciation. Which is considered the (far) more common mechanism of species formation? What does "gene flow" between populations do?
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
A species is a group of_________ that evolves___________. The biological species concept identifiesspecies on the basis of their_________ . The biologicalspecies concept cannot be applied to species that reproduce_______________.