Which of the following would result in allopatric speciation by dispersal? A. A river separating a previously contiguous population of salamanders B. A receding water table separating a population of frogs into two separate wetlands C. Finches colonizing an island exposed by water level changes in a reservoir D. A population of trees being split in two by an advancing glacier

Which of the following would result in allopatric speciation by dispersal? A. A river separating a previously contiguous population of salamanders B. A receding water table separating a population of frogs into two separate wetlands C. Finches colonizing an island exposed by water level changes in a reservoir D. A population of trees being split in two by an advancing glacier

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter11: Evolution And Its Processes

Section: Chapter Questions

Problem 20CTQ: Two species of fish had recently undergone sympatric speciation. The males of each species had a...

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Which of the following could result in allopatric speciation? A. Two populations of a species are separated by a river that they are unable to cross. B. Two populations of a species are separated by a field that is too dry during the summertime. C. One group within a population mates during the evenings and another during the mornings. D. One group within a population develops a new mating ritual that is not recognized by the other.
Consider two species that diverged whilegeographically separated but resumed contactbefore reproduction isolation was complete. Predictwhat would happen over time if two species matedindiscriminately and a. hybrid offspring survived and reproducedmore poorly than offspring from intraspecificmating or b. hybrid offspring survived and reproduced aswell as offspring from intraspecific mating.Provide an example for each to illustrate yourpoint.
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A mountain range divides a freshwater snail species into two large 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: O A. allopatric speciation by vicariance. O B. sympatric speciation. C. parapatric speciation. D. allopatric speciation by peripheral isolation. « » A Moving to another question will save this response. 8:02 AM 11/10/20 a 18 hp 近
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1. Answer the multiple choice then true or false below. 1a.) Two islands with similar topologies have the same size and same distance from the mainland. One island is a land-bridge island while the other is an oceanic island. Which one is expected to have a much higher equilibrium number of species? A. The land-bridge island B. The oceanic island C. Both have more or less the same equilibrium number of species 1b.) Vicariance could lead to speciation A. TRUE B. FALSE
Direction: 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.