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Author Topic:   Imported weed diversification supports macro-evolution
Adminnemooseus
Inactive Administrator


Message 35 of 59 (298312)
03-26-2006 12:25 PM
Reply to: Message 34 by Coragyps
03-26-2006 12:09 PM


Topic drift alert! etc...
I know genetic differences within/between races has been covered before somewhere, but I think it's time to cover it again.
How about submitting something to the Proposed New Topics forum?
Per this topic - People, get back on the weed.
Adminnemooseus

This message is a reply to:
 Message 34 by Coragyps, posted 03-26-2006 12:09 PM Coragyps has replied

Replies to this message:
 Message 41 by Coragyps, posted 03-26-2006 4:13 PM Adminnemooseus has not replied

  
Adminnemooseus
Inactive Administrator


Message 51 of 59 (298527)
03-27-2006 4:11 AM


Total topic theme abandonment - Topic closed
The topic core theme was 5 species of the goatsbeard plant. No trace of that theme for a long time.
Adminnemooseus
This message has been edited by Adminnemooseus, 03-27-2006 04:11 AM

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Adminnemooseus
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Message 52 of 59 (299727)
03-31-2006 2:53 AM


Topic reopened by request
Speel-yi, at Thread Reopen Requests:
I would like to comment on this topic as there are some aspects to the original topic I believe I can clarify.
Remember, the topic title and theme is "Imported weed diversification supports macro-evolution". Repeating message 1:
In the early 1900s, three plant species native to Europe were brought to america. These three belong to the goatsbeard genus, Tragopogon, and are T. dubius, T. pratensis, and T. porrifolius. These weeds are now common in urban wastelands. In the 1950s, botanists discovered something absolutely amazing. There were two new species in Idaho and eastern Washington. Keep in mind, the original three are also there. The new ones are T. miscellus and T. mirus.
Those familiar with the Hardy-Weinberg equation know that it states five conditions that must be met for no evolution to occur.
1) An infinately large population
2) No preferential mating
3) No differential migration
4) No mutation
5) No natural selection
The goatsbeard is not native to America, but to Europe. It migrated here, even though it had no choice (I don't think many migrations that lead to speciation are truly by choice). Also, the weeds did not migrate back to Europe. The weeds did not have an infinately large population. Because of being placed into a new environment, new pressures would be placed on the weeds. The two new species are also not found in Europe.
i don't know about you, but this looks an awful lot like speciation and macro-evolution.
Reference: Biology, Sixth Edition. Campbell and Reece (Authors). Published by Benjamin Cummings. Copyright 2002.
Adminnemooseus

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Adminnemooseus
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Message 55 of 59 (299854)
03-31-2006 4:11 PM
Reply to: Message 53 by Speel-yi
03-31-2006 12:54 PM


Focus, people!
I think that all new messages in this topic should be in response to message 53, or to messages that were responses to message 53, etc. In other words, message 53 should now define the theme of the topic.
Or if you must reply to older messages, they should be messages that specifically connect to the content of message 1.
Focus on the weed, weedhoppers!
Adminnemooseus

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This message is a reply to:
 Message 53 by Speel-yi, posted 03-31-2006 12:54 PM Speel-yi has not replied

  
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