Understanding through Discussion


Welcome! You are not logged in. [ Login ]
EvC Forum active members: 64 (9021 total)
47 online now:
DrJones* (1 member, 46 visitors)
Newest Member: Ashles
Post Volume: Total: 882,630 Year: 276/14,102 Month: 276/294 Week: 32/136 Day: 32/27 Hour: 0/1


Thread  Details

Email This Thread
Newer Topic | Older Topic
  
Author Topic:   How is Natural selection a mechanism?
Granny Magda
Member (Idle past 118 days)
Posts: 2383
From: UK
Joined: 11-12-2007


Message 7 of 191 (522589)
09-04-2009 7:38 AM
Reply to: Message 6 by AndrewPD
09-04-2009 7:01 AM


Hi Andrew,

quote:
But I don't see how something could be selcted for if it wasn't already present due to a mutation?

You are correct, it couldn't. Initially mutation provides variation and then natural selection gets to work, weeding out the useful mutations from the bad. I think perhaps your problem boils down to the fact that occasionally people use the term "natural selection" to refer to the process of evolution overall, missing out other important factors, such as mutation and genetic drift.

quote:
Now my question appears sixth on a google search.

Don't you just hate it when that happens!

Mutate and Survive


"A curious aspect of the theory of evolution is that everybody thinks he understands it." - Jacques Monod

This message is a reply to:
 Message 6 by AndrewPD, posted 09-04-2009 7:01 AM AndrewPD has not yet responded

  
Newer Topic | Older Topic
Jump to:


Copyright 2001-2018 by EvC Forum, All Rights Reserved

™ Version 4.0 Beta
Innovative software from Qwixotic © 2021