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Life Science: About the Course

Teacher-Talk Life

[Channel-talklife] #5Variation, Adaption, and Natural Selection

From: Miriam <miriamp@citlink.net>
Date: Mon Apr 17 2006 - 15:24:30 EDT
X-Mailer: IncrediMail (5002185)

I liked the idea to have students look at the hairs on plants and notice
variation. They sure do seem to have many things already figured out about
variation and the consistency of variation.
 
I wonder where I can get some PTC paper to do the tasters test. Perhaps on
the web site, I will look. It looks like a good research/math
graph/genetics project.
 
I have a bone to pick about natural selection. I don't believe it explains
large scale evolution. Just because one rabbit has no ability to taste the
poisionous plants does not keep him from reproducing at all. Also,
characteristics that are not life threatening, like longer ears to release
heat, don't really cause the rabbit to not reproduce as much. I cannot see
that all of the traits that are in animals limit them from reproducing
significantly enough to eliminate that trait from the gene pool. It works
on a small scale sometimes.
 
Also, order is never created by randomness, and this world is very orderly.
 
I am sad to see evolution presented without some other theories also
presented.
 
Miriam
 
 

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Received on Mon Apr 17 18:53:08 2006
 

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