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Author Topic:   The next stage of human evolution
kuresu
Member (Idle past 621 days)
Posts: 2544
From: boulder, colorado
Joined: 03-24-2006


Message 31 of 33 (343997)
08-27-2006 4:16 PM
Reply to: Message 30 by mitchellmckain
08-27-2006 4:13 PM


Re: Technological enhancement
no kidding about the deep and difficult. If we can get rid of Down's, why stop there? Eventually someone, somewhere, as you pointed out, will try to do more.

Unfortunately, it'll happen with or without regulation.

If only, if only, the woodpecker did cry,
all humans were good, and none had to die.

that made no sense.


All a man's knowledge comes from his experiences
This message is a reply to:
 Message 30 by mitchellmckain, posted 08-27-2006 4:13 PM mitchellmckain has not yet responded

    
obvious Child
Member (Idle past 2223 days)
Posts: 661
Joined: 08-17-2006


Message 32 of 33 (344080)
08-27-2006 10:17 PM
Reply to: Message 29 by kuresu
08-27-2006 3:22 PM


Re: Technological enhancement
i didn't say everything. You sure about homozygous? I recall reading something about alot of adults in Africa with homozygous who were completely immune to malarity.
This message is a reply to:
 Message 29 by kuresu, posted 08-27-2006 3:22 PM kuresu has responded

Replies to this message:
 Message 33 by kuresu, posted 08-27-2006 10:58 PM obvious Child has not yet responded

  
kuresu
Member (Idle past 621 days)
Posts: 2544
From: boulder, colorado
Joined: 03-24-2006


Message 33 of 33 (344094)
08-27-2006 10:58 PM
Reply to: Message 32 by obvious Child
08-27-2006 10:17 PM


Re: Technological enhancement
The sufferers of the illness have a reduced life span. It is believed that carriers (sickle cell trait) are relatively resistant to malaria. Since the gene is incompletely recessive, carriers have a few sickle red blood cells at all times, not enough to cause symptoms, but enough to give resistance to malaria. Because of this, heterozygotes have a higher fitness than either of the homozygotes.

from http://en.wikipedia.org/wiki/Sickle_cell_anemia

that five year figure I picked up here, and I should've added "if left uncared for--ie no treatments to alleviate the problem--the child dies soon after birth--soon being a perhaps tortuos five or so years of existence.

only beneficial if you're a carrier.


All a man's knowledge comes from his experiences
This message is a reply to:
 Message 32 by obvious Child, posted 08-27-2006 10:17 PM obvious Child has not yet responded

    
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