The problem of scale in evolution
This presentation is the property of its rightful owner.
Sponsored Links
1 / 14

The Problem of Scale in Evolution PowerPoint PPT Presentation


  • 54 Views
  • Uploaded on
  • Presentation posted in: General

The Problem of Scale in Evolution. Jillian Banks, Jeremy Brown, Cindy Gordon, Chris Gregg, Travis Marsico, Chris Osovitz, Rebecca Symula Evolution II – We Rule!!. Context. Designed for 100+ student, introductory-level course Designed for the final day of a week long module on evolution

Download Presentation

The Problem of Scale in Evolution

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


The problem of scale in evolution

The Problem of Scale in Evolution

Jillian Banks, Jeremy Brown, Cindy Gordon, Chris Gregg, Travis Marsico, Chris Osovitz, Rebecca Symula

Evolution II – We Rule!!


Context

Context

  • Designed for 100+ student, introductory-level course

  • Designed for the final day of a week long module on evolution

  • Prior knowledge

    • Students will understand divergence from a common ancestor; i.e., they will have a tree-like rather than a ladder-like view of evolution

    • Students will understand natural selection, population, variation, inheritance, genotype, and phenotype


The problem of scale in evolution

Organizational scale

Natural selection

Organism phenotype

Protein phenotype

Genotype


Spatial scale

Spatial scale

rosarubicondior.blogspot.com


Time scale

Time scale

earth-time.org


The problem of scale in evolution

Approximately how long would you expect it to take for diverging populations to display morphological variation?

  • 100 years

  • 100,000 years

  • 1,000,000 years

  • 1,000,000,000 years

  • It varies

Response Counter


Activity

Activity

  • Pair up with another person

  • Rank your cards according to instructions provided (5 min)

  • ‘A’ group pair with a ‘B’ group and compare:

    • What you based your rankings on (morphology or time)

    • The rankings themselves (2 min)

  • Flip your cards over, preserving the order of rankings. There is one correct sequence of colors which applies to both groups.

    • Do your two groups match? Why or why not? Discuss! (3 min)


The problem of scale in evolution

0.01 million years ago

commons.wikimedia.org

brittanica.com


The problem of scale in evolution

≥3 million years ago

flickriver.com

flickriver.com


The problem of scale in evolution

~300 million years ago

0000050603428.deviantart.com

cs.trinity.edu


The problem of scale in evolution

~375 million years ago

www.cisfbr.org.uk

commons.wikimedia.org


Sequence

Sequence

Morphology

Time


The problem of scale in evolution

Approximately how long would you expect it to take for diverging populations to display morphological variation?

  • 100 years

  • 100,000 years

  • 1,000,000 years

  • 1,000,000,000 years

  • It varies

Response Counter


Learning outcome

Learning Outcome

  • Students will resolve the misconception that evolution occurs at a single time scale


  • Login