For this exercise you will read ‘Evolution in Action: a
50,000-Generation Salute to Charles Darwin’, one of a series of articles
celebrating the 150th anniversary of the publication of
Darwin’s Origin of Species published by the American Society for
Microbiology. This one features the research of Richard E. Lenski and
1.(2) A contemporary of
2.(2) Look up Luria and Delbrück’s famous 1943
experiment on the origin of adaptive traits in bacteria and explain how it shed
light on how natural selection works.
3.(2) Describe in general the design of
Lenski’s 50,000-generation experiment with bacteria. What hypotheses is it designed to test?
4.(2) Describe one of the unexpected results of
5.(2) What are avidians and what did Lenski learn from them?