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Darwin Day: Heroes of Evolution

12/02/2020 @ 10:00 AM - 11:00 AM PST

Free

This presentation has since taken place, you can view the film recording here

 

Heroes of Evolution: Margulis and McClintock: The Women Who Broke Darwinian Theory

This lecture will honor the accomplishments of two scientists who characterized exceptions to standard Darwinian Evolution Theory.

Dr. Lynn Margulis (aka Lynn Sagan) proposed that some organelles in cells are derived from once free-living organisms that took up residence inside a larger host cell. Chloroplasts and mitochondria are now well established examples of Endosymbiosis. Endosymbiosis is the combination of two organisms to create a new one thus breaking “identity by descent.”

Dr. Barbara McClintock (Nobel Laureate 1983) characterized “jumping genes” in corn. The presence of transposons and other mobile elements has described over time a new paradigm for how we understand genomes and how dynamic they are. Their ability to transfer themselves and DNA between organisms and move within genomes is another counterexample to “identity by descent”

The challenges these women in science faced from their male peers will be briefly discussed as well. 

 

Dr. Stephen L. Gasior 

Previous work in the Library

Previous work in the Film Collection

Podcast interview

 

 

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Details

Date:
12/02/2020
Time:
10:00 AM - 11:00 AM PST
Cost:
Free
http://maps.secondlife.com/secondlife/The%20Science%20Circle/67/129/32

Venue

Auditorium

Organisers

Chantal Jager
Earl Kiech

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