Evolution%20Bluff - PowerPoint PPT Presentation

Title: Evolution%20Bluff


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Evolution Bluff
Natural Selection
Darwin
Evidence
Mechanisms
Wild Card
Q 100
Q 100
Q 100
Q 100
Q 100
Q 200
Q 200
Q 200
Q 200
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Q 300
Q 300
Q 300
Q 300
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Q 400
Q 400
Q 400
Q 400
Q 400
Q 500
Q 500
Q 500
Q 500
Q 500
Final Jeopardy
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100 Darwin
What are Darwins four postulates?
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100 Answer Darwin

1. In every population there is variety.
2. Some of that variety is passed on to offspring.
3. In every generation there are more individuals
   born than can survive.
4. Over time, the individuals who are the most fit
   for their environment will survive better to
   reproduce.

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200 Darwin
Darwin identified thirteen different species of
finches in the Galapagos, which he determined had
all descended from a common ancestor. These
finches had developed different beak shapes to
adapt to the various food sources on different
islands. This is an example of _________________.
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200 Answer Darwin
Adaptive Radiation
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300 Darwin
What is the name of Darwins book laying out his
theory of evolution through natural selection?
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300 Answer Darwin
On the Origin of Species
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400 Darwin
What is speciation and how is it related to the
picture below?
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400 Answer Darwin
Speciation is the formation of a new species
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500 Darwin
Where did Darwin conduct most of his research
that lead him to develop his ideas about descent
with modification through natural selection?
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500 Answer Darwin
The Galapagos Islands
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100 Evidence
Some animals have structures with similar origins
but different purposes, such as the flipper of a
whale and the wing of a bat. These are called
_____________ structures.
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100 Answer Evidence
Homologous Structures
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200 Evidence
What are 2 examples of vestigial structures in
the human body?
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200 Answer Evidence
The tailbone and the appendix
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300 Evidence
What is an analogous structure?
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300 Answer Evidence
Analogous structures have a SIMILAR function but
DIFFERENT evolutionary origin.
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400 Evidence
What is comparative embryology and how is it used
to support evolution?
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400 Answer Evidence
Embryology is the study of early stages of animal
development.
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500 Evidence
What are 6 forms of evidence for evolution that
we discussed in class?
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500 Answer Evidence

1. Fossils
2. DNA
3. Homologous structures
4. Vestigial structures
5. Biogeography
6. Comparative embryology

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100 Mechanisms
What is the relative frequency of an allele?
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100 Answer Mechanisms
The number of times a particular allele occurs in
a gene pool
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200 Mechanisms
What are 2 sources of genetic variation?
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200 Answer Mechanisms
Mutation and independent assortment
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300 Mechanisms
What is genetic drift?
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300 Answer Mechanisms
Random changes in allele frequency
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400 Mechanisms
What conditions must be met in order to establish
Hardy-Weinberg Equilibrium?
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400 Answer Mechanisms

• There are no mutations
• Mating is random
• Populations are infinitely large
• There is no selection

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500 Mechanisms
What are 3 types of reproductive isolation?
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500 Answer Mechanisms

1. Behavioral isolation
2. Geographic isolation
3. Temporal isolation

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100 Natural Selection
What are 3 types of natural selection?
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100 Answer Natural Selection

1. Stabilizing selection
2. Disruptive selection
3. Directional selection

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200 Natural Selection
The peppered moth provides an example of what
type of natural selection?
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200 Answer Natural Selection
Directional selection, where allele frequency
shifts in one direction.
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300 Natural Selection
What is fitness in terms of evolution and natural
selection?
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300 Answer Natural Selection
The ability to survive and reproduce.
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400 Natural Selection
Darwins finches are an example of this type of
selection.
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400 Answer Natural Selection
Disruptive selection
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500 Natural Selection
A population of clams changes over time so that
medium-sized clams outnumber large or small sized
clams. This is an example of what type of natural
selection?
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500 Answer Natural Selection
Stabilizing selection
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100 Wild Card
What is evolution?
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100 Answer Wild Card
Genetic change in species over a very long period
of time
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200 Wild Card
What is a gene pool?
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200 Answer Wild Card
All genes present in a population
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300 Wild Card
Which animal is most closely related to humans?
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300 Answer Wild Card
The chimpanzee
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400 Wild Card
Humans and mice share around 60 of their DNA,
while humans and chimpanzees share roughly 98 of
their DNA. Which are more closely related?
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400 Answer Wild Card
Humans and chimpanzees
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500 Wild Card
The diagram below shows a series of undisturbed
rock strata. A different species of fish is
found in each layer. What are the relative ages
of these fish from oldest to youngest?
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500 Answer Wild Card
C, B, A
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Final Jeopardy
If a population includes 250 individuals
homozygous dominant (RR red flowers), 250
individuals heterozygous for this gene (Rr red
flowers), and 125 homozygous recessive (rr white
flowers), what are the frequencies of the alleles
for red and white?
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Final Jeopardy Answer
0.60 red, 0.40 white