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Chapter 14
The Origin of Species
Active Lecture Questions for
Biology: Concepts & Connections, Sixth Edition
Campbell, Reece, Taylor, Simon, and Dickey
Copyright © 2009 Pearson Education, Inc.
Concept Check
Which of the following define a species?
1) A population of organisms that can
breed together and produce fertile
offspring.
2) Organisms that share observable and
measurable phenotypic traits.
3) Organisms that share a common and
unique genetic history.
4) Organisms that share common and
unique adaptations to fit specific roles in
an ecological community.
5) All of the above define a species
depending on the question.
Copyright © 2009 Pearson Education, Inc.
Answer
Which of the following define a species?
5)
All of the above define a species
depending on the question.
Copyright © 2009 Pearson Education, Inc.
Concept Check
These two meadowlarks are two separate
species, the Eastern, Sturnella magna and
the Western,Sturnella neglecta? Though
they look very similar and have similar
habitats they are considered different
species because:
1)
The two do not normally interbreed.
2)
Their ranges do not overlap.
3)
They have different songs.
4)
They do not share the same habitat.
Copyright © 2009 Pearson Education, Inc.
Answer
These two meadowlarks are two separate
species, the Eastern, Sturnella magna and
the Western,Sturnella neglecta? Though
they look very similar and have similar
habitats they are considered different
species because:
1)
The two do not normally interbreed.
Copyright © 2009 Pearson Education, Inc.
Concept Check
There are several other species pairs like these
Meadowlarks in the Great Plains (orioles,
chickadees, yellow-rumped warblers and
flickers). Some are considered separate
species and others aren’t, even though they do
appear quite different. Which of the following
might have geologically isolated these different
bird populations leading to speciation?
1)
The Mississippi River.
2)
Recent (geologically) continental
glaciation.
3)
Prairie fires in the spring.
4)
Hurricanes from the Gulf of Mexico
Copyright © 2009 Pearson Education, Inc.
Answer
There are several other species pairs like these
Meadowlarks in the Great Plains (orioles,
chickadees, yellow-rumped warblers and
flickers). Some are considered separate
species and others aren’t, even though they do
appear quite different. Which of the following
might have geologically isolated these different
bird populations leading to speciation?
2)
Recent (geologically) continental
glaciation.
Copyright © 2009 Pearson Education, Inc.
Thinking like a scientist
In Diana Dodd’s experiment a laboratory fruit fly population was
separated into two isolated populations living in different
environments. Which mode of speciation is modeled in this
experiment?
Macromolecular
2)
Allopatric
3)
Sympatric
Male
Starch Maltose
1)
Female
Starch
Maltose
22
9
8
20
Experimental mating frequencies
Copyright © 2009 Pearson Education, Inc.
Answer
In Diana Dodd’s experiment a laboratory fruit fly population was
separated into two isolated populations living in different
environments. Which mode of speciation is modeled in this
experiment?
2)
Allopatric
Male
Starch Maltose
Female
Starch
Maltose
22
9
8
20
Experimental mating frequencies
Copyright © 2009 Pearson Education, Inc.
Thinking like a scientist
Diana Dodd’s hypothesis predicted
that reproductive barriers would
develop in fly populations isolated
and reared in different
environments. Do the results
support this hypothesis?
2)
Yes, female fruit flies show a
preference for mating with
males reared in the same
environment.
No, females fruit flies are able
to mate with males reared in
the same and different
environments.
Female
Starch
Maltose
Male
Starch Maltose
1)
22
9
8
20
Experimental mating frequencies
Copyright © 2009 Pearson Education, Inc.
Answer
Diana Dodd’s hypothesis predicted
that reproductive barriers would
develop in fly populations isolated
and reared in different
environments. Do the results
support this hypothesis?
Yes, female fruit flies show a
preference for mating with
males reared in the same
environment.
Female
Starch
Maltose
Male
Starch Maltose
1)
22
9
8
20
Experimental mating frequencies
Copyright © 2009 Pearson Education, Inc.
Thinking like a scientist
Which of the following best describes
the control group for this experiment?
Copyright © 2009 Pearson Education, Inc.
1)
Populations of flies were reared
in different environments but not
separated for to test for mating
preference.
2)
Flies reared on one media type
(single environment) were raised
together and in separate
populations. Mating preferences
were tested between population
reared together and separate but
in the same environment.
3)
The control group was the
original fly population.
Answer
Which of the following best describes
the control group for this experiment?
2)
Copyright © 2009 Pearson Education, Inc.
Flies reared on one media type
(single environment) were raised
together and in separate
populations. Mating preferences
were tested between population
reared together and separate but
in the same environment.
Science and Society
Natural History museums house collections of many kinds of
animals. These collections contribute to our understanding of
evolution. Most museums still carry on with limited collecting,
concentrating of particular groups or organisms that will provide
a particular insight into the working of evolution. Such a bird
recently appeared in Missouri. The gull was suspected of being
a rare hybrid so it was collected for study at a nationally
recognized museum. Some members of the local bird watching
community were incensed. Do you think that collecting birds
such as this suspected hybrid is scientifically justified?
Strongly
Disagree
Copyright © 2009 Pearson Education, Inc.
A
B
C
D
E
Strongly
Agree
Science and Society
The proponents of Intelligent Design (ID) would like equal
standing as an alternative to evolutionary theory. However, at
this point intelligent design proponents have yet to produce
evidence or research that supports their ideas. Do you think
ID meets the tests of science?
Strongly
Disagree
Copyright © 2009 Pearson Education, Inc.
A
B
C
D
E
Strongly
Agree
Science and Society
One of the lines of evidence that led Darwin to the theory of
natural selection was his study of artificial selection. Plant
breeders and pigeon breeders select offspring with specific traits
in mind before hand. However, since humans are an integral
part of the natural world do you think that artificial selection
might more appropriately be termed “natural selection?”
Strongly
Disagree
Copyright © 2009 Pearson Education, Inc.
A
B
C
D
E
Strongly
Agree