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Evolution
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Ch 22 – 25
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CHAPTER 22: EVOLUTION: DARWINIAN VIEW
p 438-51
Geological gradualism
Lamarck’s theory of inheritance of acquired characteristics
Darwin’s observations regarding species of animals on the Galapagos Islands
Darwin’s Theory of Natural Selection
5 lines of evidence for Darwin’s Theory
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CHAPTER 23: HOW POPULATIONS EVOLVE
Gene Pool
Causes of genetic variation
Hardy Weinberg theorem
Natural Selection
Genetic drift
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LAB: HARDY-WEINBERG APPLICATION of EVOLVING POPULATIONS
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CHAPTER 24: ORIGIN OF SPECIES
Biological “species”
Isolating mechanisms
(prezygotic and post zygotic)
p 454-70
p 472-88
Allopatric speciation
Sympatric speciation
Punctuated equilibrium
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CHAPTER 25: MACROEVOLUTION-TRACING PHYLOGENY
p 491-507
Fossils (formation & dating)
Adaptive Radiation
Continental drift
Taxonomy (homology & molecular biology)
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UNIT TEST: CHAPTERS 22-25
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Semester review
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6th period meets
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6th period exam
9:21 – 11:52
1st period
2nd period
3rd period
12:40 – 1:28
1:31 – 2:19
2:22 – 3:10
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2nd period exam
9:21 – 11:52
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MY BIRTHDAY 
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3rd period exam
1st period exam
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(regular time)
Evolution Essays
1989: Do the following with reference to the Hardy-Weinberg model.
a. Indicate the conditions under which allele frequencies (p and q) remain constant from
one generation to the next.
b. Calculate, showing all work, the frequencies of the alleles and frequencies of the
genotypes in a population of 100,000 rabbits of which 25,000 are white and 75,000
are agouti. (In rabbits the white color is due to a recessive allele, w, and agouti is due
to a dominant allele, W.)
c. If the homozygous dominant condition were to become lethal, what would happen to
the allelic and genotypic frequencies in the rabbit population after two generations?
1992: Evolution is one of the unifying concepts of modern biology.
a. Explain the mechanisms that lead to evolutionary change.
b. Describe how scientists use each of the following as evidence for evolution:
1) Bacterial resistance to antibiotics
2) Comparative biochemistry
3) The fossil record
1994: Genetic variation is the raw material for evolution.
a. Explain three cellular and/or molecular mechanisms that introduce variation into the
gene pool of a plant or animal population.
b. Explain the evolutionary mechanisms that can change the composition of the gene
pool.
2004: Darwin is considered the “father of evolutionary biology.” Four of his contributions to the
field of evolutionary biology are listed below.
o
o
o
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The nonconstancy of species
Branching evolution, which implies the common descent of all species
Occurrence of gradual changes in species
Natural selection as the mechanism for evolution
a. For EACH of the four contributions listed above, discuss one example of supporting
evidence.
b. Darwin’s ideas have been enhanced and modified as new knowledge and technologies
have become available. Discuss how TWO of the following have modified biologists’
interpretation of Darwin’s original contributions.
o Hardy-Weinberg equilibrium
o Punctuated equilibrium
o Genetic engineering