Allopatric speciation refers to the formation of a new species: a. by stabilizing selection b. by directional selection c. by disruptive selection d. in the same location as the original species e. in a different location than the original species

Allopatric speciation refers to the formation of a new species: a. by stabilizing selection b. by directional selection c. by disruptive selection d. in the same location as the original species e. in a different location than the original species

Name: 3 Allopatric speciation refers to the formation of a new species:a. by
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Description: 3 Allopatric speciation refers to the formation of a new species:a. by stabilizing selectionb. by directional selectionc. by disruptive selectiond. in the same location as the original speciese. in a different location than the original species

Biology (MindTap Course List)

11th Edition

ISBN:9781337392938

Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Publisher:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg

Chapter20: Speciation And Macroevolution

Section: Chapter Questions

Problem 4TYU: The first step leading to allopatric speciation is (a) hybrid inviability (b) hybrid breakdown (c)...

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A defining characteristic of sympatric speciation is a.The appearance of new species in the midst of old ones b.Asexually reproducing populations c.Geographic isolation. d.Large populations
Which of the following factors would not contribute toallopatric speciation?(A) The separated population is small, and genetic drift occurs.(B) The isolated population is exposed to different selectionpressures than the ancestral population.(C) Different mutations begin to distinguish the gene pools ofthe separated populations.(D) Gene flow between the two populations is extensive.
Which of the following is a good description of Sympatric speciation? A. Speciation without geographic isolation B. Changes in sequence of DNA of an organism C. Speciation due to geographical isolation D. The change in the genetic characteristics of a population of organisms over time
Which variable increases the likelihood of allopatric speciation taking place more quickly? a. lower rate of mutation b. longer distance between divided groups c. increased instances of hybrid formation d. equivalent numbers of individuals in each population
The first step leading to allopatric speciation is (a) hybrid inviability (b) hybrid breakdown (c) adaptive radiation (d) geographic isolation (e) paedomorphosis
A physical barrier separates a single species, causing two separate populations to form. Over time these two populations adapt to their environments. Eventually, these two populations are no longer able to successfully reproduce with each other. This is known as __________. A. Sympatric speciation B. Allopatric speciation C. Autopatric speciation D. Parapatric speciation
Which type of natural selection is involved in sympatric speciation? Group of answer choices A. intrasexual selection B. disruptive C.stabilizing D.directional E.intersexual
When two populations are reproductively isolated, what else must occur for speciation to happen? (a) gene ﬂow (b) genetic divergence (c) coevolution (d) convergent evolution (e) none of the above
A. What kind of speciation do we normally associate with members from one population being geographically displaced to a new, smaller population? Geospiza scandens B. What kind of speciation do we normally associate with members of a population that become ecologically, genetically or behaviorally distinct within that population such that they become reproductively isolated?
According to the punctuated equilibria model,(A) given enough time, most existing species will branchgradually into new species.(B) most new species accumulate their unique features relatively rapidly as they come into existence, then changelittle for the rest of their duration as a species.(C) most evolution occurs in sympatric populations.(D) speciation is usually due to a single mutation.
IN AN ILLUSTRATIVE MANNER, DRAW EXAMPLES OF ORGANISMS OR INSTANCES WHEREIN REPRODUCTIVE ISOLATING MECHANISMS LEAD TO SPECIATION. IDENTIFY AT LEAST TWO (2) SPECIATION. BRIEFLY DESCRIBE EACH MECHANISM OF SPECIATION.
The type of speciation that takes place in geographically overlapping populations is known as ________________________. A. Allopatric speciation B. Sympatric speciation C. Morphological speciation D. Physiological speciation