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Exam 14: How Biological Diversity Evolves

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Question 21

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When two frog species,Rana pipiens and Rana sylvatica,mate,the offspring die early in embryonic development.This is an example of ________.

A) hybrid sterility
B) mechanical isolation
C) reduced hybrid viability
D) reduced hybrid fertility

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Question 22

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Molecular systematics might examine all of the following types of data EXCEPT ________.

A) proteins
B) DNA sequences
C) amino acid sequences
D) anatomical features

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Question 23

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Which of the following describes allopatric speciation?

Which of the following is the strongest piece of evidence for why some scientists believe that we are at the start of a sixth mass extinction?

Plate tectonics has been responsible for instances of all of the following EXCEPT ________.

What hypothesis did Luis and Walter Alvarez test in relation to the mass extinction of dinosaurs 65 million years ago (MYA) ?

Of the following taxonomic levels,species found within the same ________ are the most closely related.

The biological species concept cannot be applied to ________.

Read the following scenario to answer the following questions. In some zoos, rare crosses between a male lion and a female tiger have produced hybrid offspring called "ligers." Male ligers are sterile but some female ligers are fertile. In the wild, lion and tiger ranges do not naturally overlap, making such a cross unlikely. Furthermore, the solitary behavior of tigers and the social organizations of lions create behavioral differences. -The natural differences in the ranges of wild tigers and lions is an example of ________.

Examine the figure below.According to the figure,cladistic analysis indicates that crocodiles are more closely related to ________ than to ________.

The wing of a bald eagle is ________ the wing of a penguin.

A period of mass extinction is often followed by ________.

Homology is evidence of ________.

Speciation requires ________.

An ancestral species and all its evolutionary descendants define a(n) ________.

When you go outside,it is common to hear a variety of bird songs.These songs vary among bird species as well as bird flocks.Interestingly,some bird species that are highly unrelated have very similar song qualities.What can you conclude from this phenomenon?

What type of reproductive isolating mechanism is described by a situation in which female fireflies mate only with males who emit light in a particular pattern?

A reproductive barrier that prevents individuals from closely related species from interbreeding is an example of ________.

Which of the following taxonomic levels is most inclusive?

Sympatric speciation specifically EXCLUDES ________.