BSC1010 CHAPTER 22 TESTBANK EXAM QUESTIONS
AND ANSWERS WITH COMPLETE SOLUTIONS
GUARANTEED A++ GRADE
punctuated equilibrium
A model that assumes that evolution occurs in spurts, between which there are long periods of stasis
with little evolutionary change.
biological definition of species
a group of organisms that are reproductively isolated from other such groups
Locked speciation
recurrent isolation promotes
Adaptive radiation
is the phenomenon where one species diverges into many by occupying a series of different habitats
within a region
character displacement
the process by which related species become more different in order to reduce competition
The model that assumes that evolution proceeds with slow successive change in a given evolutionary
line is referred to as
, C. Gradualism
The type of speciation that results in the formation of separate species as a result of geographic
isolation is called
C. allopatric speciation
When species are kept separate by preventing the formation of hybrid zygotes, the mechanism that
keeps the species separate is known as a _______________ isolating
C. prezygotic
A type of isolating mechanism that leads to reproductive isolation after a hybrid zygote has formed is
called a ________________ isolating mechanism
B. Postzygotic
Which isolating mechanism is postzygotic?
A. hybrid sterility
Evolution acts at the level of the
B. population
Hybridization regularly occurs between three species of Darwin's finches on Daphne Major, but the
finches are still considered different species because
D. they occupy different niches
According to the Biological Species Concept, two groups of organism that are unable to form fertile,
viable hybrids are considered to be different
B. species
AND ANSWERS WITH COMPLETE SOLUTIONS
GUARANTEED A++ GRADE
punctuated equilibrium
A model that assumes that evolution occurs in spurts, between which there are long periods of stasis
with little evolutionary change.
biological definition of species
a group of organisms that are reproductively isolated from other such groups
Locked speciation
recurrent isolation promotes
Adaptive radiation
is the phenomenon where one species diverges into many by occupying a series of different habitats
within a region
character displacement
the process by which related species become more different in order to reduce competition
The model that assumes that evolution proceeds with slow successive change in a given evolutionary
line is referred to as
, C. Gradualism
The type of speciation that results in the formation of separate species as a result of geographic
isolation is called
C. allopatric speciation
When species are kept separate by preventing the formation of hybrid zygotes, the mechanism that
keeps the species separate is known as a _______________ isolating
C. prezygotic
A type of isolating mechanism that leads to reproductive isolation after a hybrid zygote has formed is
called a ________________ isolating mechanism
B. Postzygotic
Which isolating mechanism is postzygotic?
A. hybrid sterility
Evolution acts at the level of the
B. population
Hybridization regularly occurs between three species of Darwin's finches on Daphne Major, but the
finches are still considered different species because
D. they occupy different niches
According to the Biological Species Concept, two groups of organism that are unable to form fertile,
viable hybrids are considered to be different
B. species
