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Author Topic:   One evolving species vs speciation.
Franatic25
Junior Member (Idle past 4058 days)
Posts: 30
Joined: 11-08-2007


Message 46 of 48 (433100)
11-09-2007 11:20 PM
Reply to: Message 45 by jar
11-09-2007 7:20 PM


Re: Topic
I stray from point if you dont consider other creatures evolution in any way helpful in understanding evolution as a whole I suppose. But I do see what you mean, obviously humans dont have the seperation required to cause similar reactions that I see in the boas and pythons. So let me think a bit...

How about selective breeding of our own species? Of course we do it, selecting mates we would easily get along with (of course, this is all succeptible to debate...because human copulation in no way HAS to involve "liking" one another as a person).

In the current day and age though...the debate that we are here to discuss...is a VERY iffy subject for many. Would it be hard to imagine that those believing in a creator would more easily get along with others who believe the same? And the evolutionists as well...

What if I said that recent studies have shown that a low level of serotonin and serotonin receptors are showing to be prevalent in those believing in religion...or claiming to have "religious experiences". Not a rule of thumb of course...but it is amazing how it appears to be MUCH more concentrated in the religious population. Would it then be a stretch to suggest that the trend would continue to build? Who knows what a long term effect this would have on a species...we know short term, low levels being directly linked to depression.

Adversely though, high levels arent any better it would seem. It has been linked to infant deaths...

Serotonin is also linked to how our brains process the information it recieves, and also effects what we THINK we see. The effects of being hypo' or hyper' in this respect are vast, and I could go on and on...but I see it as a REAL possibility that humans would select mates with similar traits...and beliefs...which could soon be shown to be further linked to our individual biology. In the long run, I wouldnt find it hard to imagine that if you skewed the species in 2 in which one degressed in serotonin production...and one gained more receptors, and serotonin levels...that it could potentially lead to 2 different species. Of course...this is a BIG if...I see the theoretical possibility...but as mentioned earlier...copulation has nothing at all to do with chemical biology other than maybe pheromones...and visual DNA evidence that we see that we consider of high value like good looks...

And this is one single chemical change mind you. I could not even begin to imagine what a slight chemical change in a population would cause, any chemical...I think it would be a good place to explore in this debate on where our species is headed, and likely the first place it WILL happen next.

(Mind you, you will find my posts generally only contain biological information...which I find the most intriquing, and the most important part of any related debate. I will leave the phylosophy of the same debates, and how our species could possibly reach separation again in the future, to others with a better understanding of the subject than I do)

Edited by Franatic25, : No reason given.

Edited by Franatic25, : No reason given.


This message is a reply to:
 Message 45 by jar, posted 11-09-2007 7:20 PM jar has responded

Replies to this message:
 Message 47 by jar, posted 11-10-2007 9:52 AM Franatic25 has not yet responded

    
jar
Member
Posts: 30936
From: Texas!!
Joined: 04-20-2004


Message 47 of 48 (433133)
11-10-2007 9:52 AM
Reply to: Message 46 by Franatic25
11-09-2007 11:20 PM


Re: Topic
What you have described seems more along the lines of lactose tolerance vs lactose intolerance. You have shown no model for why the two populations either could not mate or would not mate.

In order for human speciation to occur we would need isolation over an extended period. We know for a fact that historically, even human populations that have been separated for tens of thousands of years have not speciated.

So what conditions might we reasonably see that would lead to humans evolving into two or more species?


Aslan is not a Tame Lion
This message is a reply to:
 Message 46 by Franatic25, posted 11-09-2007 11:20 PM Franatic25 has not yet responded

  
Franatic25
Junior Member (Idle past 4058 days)
Posts: 30
Joined: 11-08-2007


Message 48 of 48 (433180)
11-10-2007 1:16 PM


I dont think that is a question that I could easily answer...the only way I see biology playing a major part in this would be say...an area of the world quarantined off due to a new mutated disease...thereafter seperated into 2 groups...and possibly that the disease could act as a catylast to the mutating DNA of the quarantined group.

More likely, this one would be debated better by the fields of geology or brilliant work of other here that imagine other ways (space travel of course being very suspect) that our species could diverge.

Edited by Franatic25, : No reason given.


    
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