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Author
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Topic: How Evolution changed humans’ appearance
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 33 of 45 (710502)
11-06-2013 3:46 AM
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Reply to: Message 28 by RAZD
11-05-2013 9:13 AM
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Re: Homo sapiens at 190,000 years ago
Many thanks for that!
| This message is a reply to: | | | Message 28 by RAZD, posted 11-05-2013 9:13 AM | | RAZD has seen this message but not replied |
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 34 of 45 (710503)
11-06-2013 3:53 AM
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Reply to: Message 29 by RAZD
11-05-2013 8:29 PM
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Re: underwhelmed
Many thanks for that.
I will study your "Fischerian runaway sexual selection "
| This message is a reply to: | | | Message 29 by RAZD, posted 11-05-2013 8:29 PM | | RAZD has seen this message but not replied |
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 37 of 45 (710574)
11-07-2013 1:06 AM
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Reply to: Message 35 by AZPaul3
11-06-2013 7:23 AM
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"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 |
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 38 of 45 (710575)
11-07-2013 1:25 AM
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Reply to: Message 36 by NoNukes
11-06-2013 9:39 AM
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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.
| This message is a reply to: | | | Message 36 by NoNukes, posted 11-06-2013 9:39 AM | | NoNukes has not replied |
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 40 of 45 (710646)
11-07-2013 10:27 PM
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Reply to: Message 39 by AZPaul3
11-07-2013 8:20 AM
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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.
| This message is a reply to: | | | Message 39 by AZPaul3, posted 11-07-2013 8:20 AM | | AZPaul3 has seen this message but not replied |
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WJK
Junior Member (Idle past 3747 days) Posts: 22 Joined: 10-31-2013
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Message 45 of 45 (710684)
11-08-2013 7:33 PM
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Reply to: Message 43 by RAZD
11-08-2013 5:07 PM
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Still getting to grips with "Fisherian Runaway Sexual Selection". As you said, much to learn. Will look at that other forum!
| This message is a reply to: | | | Message 43 by RAZD, posted 11-08-2013 5:07 PM | | RAZD has seen this message but not replied |
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