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Challenges to the Modern Synthesis Stephen Jay Gould, 1941-2002Nils Eldredge, 1941-2002.

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Presentation on theme: "Challenges to the Modern Synthesis Stephen Jay Gould, 1941-2002Nils Eldredge, 1941-2002."— Presentation transcript:

1 Challenges to the Modern Synthesis Stephen Jay Gould, 1941-2002Nils Eldredge, 1941-2002

2 DNA

3 Transcription

4 Translation Notion of “gene expression”

5 Question: Why aren’t “identical twins” identical?

6 Epigenetics From Wikipedia: “Epigenetics is the study of heritable changes in gene expression or cellular phenotype caused by mechanisms other than changes in the underlying DNA sequence.” http://www.pbs.org/wgbh/nova/body/epigenetics.html Is epigenetics why cloned animals don’t fare well?

7 Genetic regulation

8 Genetic Switches (in “non-expressed” regions)

9 Genetic Regulatory Networks

10 Random Boolean Networks as models of genetic regulatory networks


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