Download Wednesday, April 21, 2010

In Class - Homework Assignment
Wednesday, April 21, 2010
Read Section 12:
pages 542 – 543
Mechanisms of Evolution
Read Section 12.3 – Random Change pages 550 - 555
Define:
Evolution
Describe the conditions under which evolution can take place.
Describe the main cases of genetic drift:
Genetic drift;
Bottleneck effect;
Founder effect.
For more information, go to: http://evolution.berkeley.edu/evosite/evo101/IIIDGeneticdrift.shtml
Label Figures 1, 2 & 3 as either Genetic drift, Bottleneck effect or Founder effect.
Figure 1
Figure 2
Figure 3
Describe Gene Flow
Describe the different:
Kinds of mutations:
Neutral mutation;
Harmful mutation;
Beneficial mutation.
Types of mutations:
Point mutations;
Insertion;
Deletion;
Inversions;
Gene duplication;
Polyploidy.
(pages 259 – 261)
Why are doctors and scientists concerned that bacteria may become resistant to the overuse of antibiotics?
Answer page 555:
Understanding Concepts: 1, 3, 5, 6, 7, 9
Applying Inquiry Skills: 13
Read Section 12.4 – Patterns of selection: pages 556 – 564
Describe the different selective pressures found on Harmful mutations versus Beneficial mutations within
a population.
Describe the different types of selection:
i:
ii:
iii:
Stabilizing Selection;
Directional Selection;
Disruptive Selection
Label Figures 6, 7 & 8 as either Stabilizing Selection, Directional Selection or Disruptive Selection.
.
Figure 6
Figure 7
Figure 8
Go to: http://wps.prenhall.com/esm_freeman_biosci_1/0,6452,499573-,00.html for interactive activities on the 3 modes
of selection
Draw representative graphs that show these types of selection over time.
Give examples for each type selection.
iv:
Sexual selection.
Do Case Study Questions – page 562 :
Answer page 564:
Understanding Concepts: 2
Applying Inquiry skills: 4
Understanding Concepts: 1, 3, 4,
For more information on the process of Evolution, go to:
http://evolution.berkeley.edu/evosite/evo101/IIIMechanisms.shtml