Evolution final exam test bank questions latest update

Evolution final exam test bank
questions
The species concept based on careful analysis of the anatomical details of the
specimen in question is ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) the ecological species concept - Answer-A) the morphospecies concept

The species concept based on analysis of character states that indicate the smallest
monophyletic group is ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) the ecological species concept - Answer-B) the phylogenetic species concept

The species concept defined as a group of organisms that are capable of
interbreeding to produce fertile offspring is ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) the ecological species concept - Answer-C) the biological species concept

A disadvantage of the morphospecies concept is ________.
A) it can be difficult to apply to organisms with small, difficult to distinguish features
B) species definitions may become arbitrary if the concept is not applied carefully
C) species definitions applied by different researchers may not be comparable
D) All of these are potential problems with this species concept. - Answer-D) All of
these are potential problems with this species concept.

Early classification systems from Aristotle to Linneaus would have been most like
what we now call ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) the ecological species concept - Answer-A) the morphospecies concept

The species concept that relies most heavily on the criterion that species are
evolutionarily independent units that are isolated by gene flow is ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) This criterion is common to all of these concepts. - Answer-D) This criterion is
common to all of these concepts

, Organisms such as prokaryotes (bacteria and archaea)―along with some
eukaryotes―reproduce asexually. In the case of bacteria and archaea in particular,
which exchange DNA but do not reproduce utilizing conventional sexual
reproduction, the BEST way in which to define species is with ________.
A) the morphospecies concept
B) the phylogenetic species concept
C) the biological species concept
D) an ecological species concept - Answer-D) an ecological species concept

8) There are two closely related populations of squirrels living in the Grand Canyon
area―one lives on the north rim, the other lives on the south rim. Speciation in these
squirrels BEST fits which model?
A) dispersive allopatric speciation
B) dispersive sympatric speciation
C) vicariant allopatric speciation
D) vicariant sympatric speciation - Answer-C) vicariant allopatric speciation

Which of the following models of speciation hinges on a physical barrier which
prevents gene flow between populations?
A) dispersive allopatric
B) dispersive sympatric
C) vicariant allopatric
D) vicariant sympatric
E) Both A and C. - Answer-E) Both A and C.

Your textbook authors make the claim that "sympatric species with matching
chromosome numbers are rare." Why is this?
A) because allopatric speciation is far more common
B) because sympatric speciation has only been hypothesized but not documented
C) because coexisting populations need a boundary to gene flow before divergence
can occur, and differences in chromosome numbers provide this
D) because macroevolution is just a theory - Answer-C) because coexisting
populations need a boundary to gene flow before divergence can occur, and
differences in chromosome numbers provide this

Isolating mechanisms leading to speciation have been documented by ________.
A) geographic isolation
B) polyploidy
C) temporal isolation
D) a mutation in a single gene
E) All of the above. - Answer-E) All of the above

It now seems clear that the strongest factor in speciation events is ________.
A) genetic drift
B) sexual selection
C) natural selection
D) the bottleneck effect - Answer-C) natural selection

Research on speciation of Hawaiian crickets, shown in the accompanying figure, has
led researchers to conclude that ________.