Return to Video

Natural Selection

  • 0:00 - 0:03
    Well I mean I hope you run faster than the bear at least.
  • 0:03 - 0:05
    >> Well I hope so too, but to survive
  • 0:05 - 0:07
    you only have to run faster than the slowest person
  • 0:07 - 0:09
    there. The slowest person is the one that's going to
  • 0:09 - 0:12
    get caught and eaten, and everyone else is going to survive.
  • 0:12 - 0:14
    >> So you don't have to be the fastest person in the group.
  • 0:14 - 0:17
    >> Right. Directed selection is not about survival
  • 0:17 - 0:20
    of the fittest, but survival of the fit enough.
  • 0:20 - 0:23
    So the mutations that cause you to run faster
  • 0:23 - 0:25
    aren't necessarily trying to make you the fastest person,
  • 0:25 - 0:27
    just not the slowest.
  • 0:27 - 0:27
    >> Exactly.
タイトル:
Natural Selection
Video Language:
English
Team:
Udacity
プロジェクト:
BIO110 - Tales from the Genome
Duration:
0:29

English subtitles

改訂