Download Unit Nine: mechanisms of evolution and evolutionary relatedness

Unit Nine: mechanisms of evolution and evolutionary relatedness
Day
Topic
Objectives
3/2
Intro to Natural Selection
Previous reading: CH 19
3-4
3/3
Mendel’Darwin’s Theory
CH19 Guided Reading Due
1-6, 9
3/4
HW Theory Moth Population Genetics Lab
CH 21 reading due
9
3/7
Mechanisms of Evolution
8, 11,12
3/8
FRQ/ CH22 due
Speciation notes and discussion
9, 8, 11,12
3/9
Speciation continued
3/10
Lice evolution clicker case
Biogeography / Sickle Cell anemia
Drug resistance in prokaryotes
3/11
Human evolution
Race for the ultimate survivor
3/21
Evolutionary relatedness of organisms
Taxonomy
3/22 -3/24
Phylogenic and Blast lab
3/25
Early Life a review of early evolution
3/28
MC Test
10-12
13-15
Unit Nine: Mechanisms of evolution
1. Describe Lamarck’s explanation of how adaptations evolve and evaluate his explanation in light
of our current understanding of genetics
2. Explain what Darwin meant by “descent with modification”
3. Describe the key ideas of Darwin’s theory of natural selection
4. Using the peppered moth, Explain how an environmental change can act as a selective pressure.
5. Explain why it is incorrect to say that an individual adapts to its environment.
6. Explain the role variation plays in natural selection.
7. Describe how each of the following increases genetic variation in a population. Be sure to
indicate the types of organisms in which of these processes occur.
a. The imperfect nature of DNA replication and repair.
b. Transformation, transduction, conjugation and transposition
8. Explain how gene duplication may provide new phenotypes and give an example of how tis may
provide cells with a wider range of function.
9. Write the general Hardy-Weinberg theorem; use it to calculate allele and genotypic frequencies.
Identify conditions for equilibrium and describe the usefulness of the model as a null.
10. Explain the concept of relative fitness and its role in adaptive evolution.
11. Explain how environmental conditions can effect evolutionary rate and direction (including
examples of directional selection, stabilizing selection and diversifying (disruptive) selection)
12. Explain how genetic drift (include founder effect and bottleneck), gene flow and natural
selection can cause microevolution
13. Using sickle cell anemia as an example, explain how phenotypic variations affect fitness of
organisms and populations in different environments.
14. Using antibiotic resistance as an example, explain how humans can impact variation in other
species
15. Give examples that demonstrate how the level of variation in a population affects population
dynamics. Include BOTH of the following
a. The potential risks of limited genetic variation
b. The link between variation and the ability of individuals to respond in different ways to
the same environmental change (i.e. disease)