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Campbell Biology in Focus

Biology

Quiz 22 :

The Origin of Species

Quiz 22 :

The Origin of Species

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Which of the following reproductive types of isolation illustrates postzygotic barriers?
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Answer:

D

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Which of the following criteria used in classification is the most easily evaluated by the observer?
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Answer:

A

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Dogs (Canis lupus familiaris)and gray wolves (Canis lupus)can interbreed to produce viable,fertile offspring.These species shared a common ancestor recently (in geologic time)and have a high degree of genetic similarity,although their anatomies vary widely.Judging from this evidence,which two species concepts are most likely to place dogs and wolves together into a single species?
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Answer:

D

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Two species of frogs belonging to the same genus occasionally mate,but the offspring fail to develop and hatch.What is the mechanism for keeping the two frog species separate?
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There is still some controversy among biologists about whether Neanderthals should be placed within the same species as modern humans or into a separate species of their own.Most DNA sequence data analyzed so far indicate that there was interbreeding between Neanderthals and humans;however,it appears to have been limited and mostly unidirectional (Neanderthal genes are present in Homo sapiens DNA,but there exists little to no evidence of the DNA of Homo sapiens in the small number of genomes sequenced from Neanderthal fossils.Which species concept is most applicable as a method of analysis in this example?
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You are an undergraduate student working with a graduate student in an entomology lab,and she presents you with a box of preserved grasshoppers of various species that are new to science and have not been described.Your assignment is to help her separate them into species.There is no accompanying information as to where or when they were collected.Which species concept will you have to use?
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When the only evidence available for two extinct species is their fossil record,evaluation of reproductive isolation and the biological species concept is not useful.However,the phylogenetic species concept could potentially differentiate the species by using evolutionary history to describe
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In a hypothetical situation,a certain species of flea feeds only on the blood of pronghorn antelopes.In rangelands of the western United States,pronghorns and cattle often associate with one another.If some of these pronghorn-feeding fleas develop a strong preference for cattle blood and mate only with other fleas that prefer cattle blood,then over time which of these should occur,if the host mammal can be considered as the fleas' habitat? 1)reproductive isolation 2)sympatric speciation 3)habitat isolation 4)prezygotic barriers
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Among known plant species,which of these are the two most commonly occurring phenomena that have led to the origin of new species? 1)allopatric speciation 2)sympatric speciation 3)sexual selection 4)polyploidy
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The origin of a new plant species by hybridization,coupled with accidents during cell division,is an example of
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Imagine two species of snakes that live in a tropical rain forest of Malaysia do not typically interbreed.In nature,one species is ground-dwelling and feeds mainly on insects and small amphibians near water,whereas the other snake feeds in the lower to mid-canopy of trees and vines rising from the forest floor.However,at a zoo in Singapore where they were kept in the same gallery exhibit,the two species were observed interbreeding and produced viable offspring.Which of the following reproductive barriers is most likely preventing these species from interbreeding in the forest?
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The most likely explanation for the high rate of sympatric speciation that apparently existed among the cichlids of Lake Victoria in the past is
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Rocky Mountain juniper (Juniperus scopulorum)and one-seeded juniper (J.monosperma)have overlapping ranges.If pollen grains (which contain sperm cells)from one species are unable to germinate and make pollen tubes on female ovules (which contain egg cells)of the other species,then which of these terms are applicable? 1)sympatric species 2)prezygotic isolation 3)postzygotic isolation 4)allopatric species 5)habitat isolation 6)reduced hybrid fertility
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Which of the following statements about species,as defined by the biological species concept,is (are)correct? I.Biological species are defined by reproductive isolation. II.Biological species are the models used for grouping extinct forms of life. III.The biological species is the largest unit of population in which successful interbreeding is possible.
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Which of the following correctly describes,or is an example of,habitat isolation?
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A species is represented by individuals that form a population
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Macroevolution occurs
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Which of the following statements about speciation is correct?
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Imagine a male dragonfly is flying around in an aggressive pattern to find an appropriate mate in a wetland with many species of dragonflies and damselflies.Finally,he spots a female dragonfly that appears to be of the same species,based on her flight behavior and color,and the two mate.The sperm of the male,however,are unable to fertilize the eggs of the female when she lays them because her egg cell membrane proteins and carbohydrates do not recognize and bind to the male's sperm.This is an example of
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Microevolution occurs
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