Directional, Diversifying or Stabilizing selection?

Discussion of everything related to the Theory of Evolution.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
NewtoBiology
Garter
Garter
Posts: 30
Joined: Tue Jan 08, 2008 3:47 am

Directional, Diversifying or Stabilizing selection?

Post by NewtoBiology » Fri Jan 25, 2008 1:03 am

Hello Biologists!!!

Would you be so kind as to explain the following...

During warm, dry weather large beetles had a greater number of offspring, while during cold, wet weather, small beetles had more offspring. is this an example of directional selection, diversifying selection, or stabilizing selection?

I would have to guess that it was diversifying selection as two unique types of beetles were forming. CAN ANYONE ADD TO THIS...

User avatar
MrMistery
Inland Taipan
Inland Taipan
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)
Contact:

Post by MrMistery » Fri Jan 25, 2008 9:15 am

i would say stabilizing, as it would probably result in a "medium sized" beetle species. because they would get bigger in summer and smaller in weather. Get my point?
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

User avatar
mith
Inland Taipan
Inland Taipan
Posts: 5345
Joined: Thu Jan 20, 2005 8:14 pm
Location: Nashville, TN
Contact:

Post by mith » Fri Jan 25, 2008 3:24 pm

however medium size was not mentioned.

I'd go with what you have now.
Living one day at a time;
Enjoying one moment at a time;
Accepting hardships as the pathway to peace;
~Niebuhr

Darby
Viper
Viper
Posts: 1278
Joined: Thu Mar 02, 2006 5:29 pm
Location: New York, USA

Re: Directional, Diversifying or Stabilizing selection?

Post by Darby » Sat Jan 26, 2008 3:57 am

Since we're dealing with seasonal weather patterns, it does seem to suggest that over a few years' time, both sizes are favored; a diverse population has the best longterm survival potential, so I'd say you're right here.

Post Reply

Who is online

Users browsing this forum: No registered users and 5 guests