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Author Topic:   How Evolution changed humans’ appearance
WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


Message 33 of 45 (710502)
11-06-2013 3:46 AM
Reply to: Message 28 by RAZD
11-05-2013 9:13 AM


Re: Homo sapiens at 190,000 years ago
Many thanks for that!

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WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


Message 34 of 45 (710503)
11-06-2013 3:53 AM
Reply to: Message 29 by RAZD
11-05-2013 8:29 PM


Re: underwhelmed
Many thanks for that.
I will study your "Fischerian runaway sexual selection "

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WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


Message 37 of 45 (710574)
11-07-2013 1:06 AM
Reply to: Message 35 by AZPaul3
11-06-2013 7:23 AM


"The only evolutionary bias in the population is the combination of all the selection pressures operating on the entire population over the entire time"
I appreciate your explanation of the various selection pressures operating. I have thought that one of the pressures could be what I have called "admiration bias". Do you think that a significant pressure comes from something like that bias or something similar by a different name? If so, do you have further information on that selection pressure?
I have seen references to "sexual selection" and "Fischerian runaway sexual selection " in this thread. Related?
I appreciate your courtesy in not ridiculing some of the assertions I have made on this thread. As a layman in this area, I have obvious limitations in trying to explain situations which I find interesting! I thank you for taking the time and effort to make your comments.

This message is a reply to:
 Message 35 by AZPaul3, posted 11-06-2013 7:23 AM AZPaul3 has replied

Replies to this message:
 Message 39 by AZPaul3, posted 11-07-2013 8:20 AM WJK has replied

  
WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


Message 38 of 45 (710575)
11-07-2013 1:25 AM
Reply to: Message 36 by NoNukes
11-06-2013 9:39 AM


I'm getting the impression that any bias in the evolution can come from a multitude of "selection pressures". I would certainly like to know more about the particular pressure that has a marked positive effect on "attractiveness" as judged by us.

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WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


Message 40 of 45 (710646)
11-07-2013 10:27 PM
Reply to: Message 39 by AZPaul3
11-07-2013 8:20 AM


Thanks for that detailed explanation of the evolutionary process. In essence it seems to me that at every generation sexual pressure is at work with either a positive or negative effect, but with a bias for the positive.
I have found the thread very rewarding and thank the contributors for taking the time and effort to help an ignoramus with the understanding of a most interesting subject.

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WJK
Junior Member (Idle past 3043 days)
Posts: 22
Joined: 10-31-2013


(1)
Message 45 of 45 (710684)
11-08-2013 7:33 PM
Reply to: Message 43 by RAZD
11-08-2013 5:07 PM


Still getting to grips with "Fisherian Runaway Sexual Selection". As you said, much to learn. Will look at that other forum!

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