Study catches 2 bird populations as they split into separate species


	Study catches 2 bird populations as they split into separate species

JohnWaterman

7-25-2009 7:05 AM

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JohnWaterman says:

So-called "macro-evolution" observed

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7-25-2009 7:34 AM

JohnWaterman

Creationists sometimes accept what they call micro- evolution but deny speciation (macro-evolution). Well science wins again!

7-25-2009 7:45 AM

ratilfar

Do they, or is the other way around? I can never be sure with such faulty logic (on the side of creationist).

7-25-2009 8:03 AM

JohnWaterman

Yeah, some say

The difference between
micro and macro-evolution is a major point of confusion between the Christian
worldview and the Darwinian evolution worldview in today’s culture.
Micro-evolution is the adaptations and changes within a species while
macro-evolution is the addition of new traits or a transition to a new species.
Micro-evolution is a fact that is plainly observable throughout nature.
Macro-evolution is a theory that has never been observed in science

http://www.exchangedlife.com/Creation/macro-evol.shtml

7-25-2009 9:03 AM

ratilfar

Thank you for clearing that up John.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/f7088d10-0ddd-413f-9cb8-6e2e512a0141/4AD68C95-545C-4C3F-A7AD-78A1532B4EC1/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp" href="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp" style="font-size: 11px;">www.geneticarchaeology.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.geneticarchaeology.com/img/CD0830DE-39F2-4F2B-9535-A0FDA46C393E" alt="Populations of the Monarcha castaneiventris flycatcher vary in plumage color across the Solomon Islands, with a subspecies on Makira Island having chestnut bellies and blue-black upper parts (Monarcha castaneiventris megarhynchus) and a subspecies on neighboring satellite islands being entirely blue-black (melanic; Monarcha castaneiventris ugiensis)" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp"><B>A new study finds that a change in a single gene has sent two closely related bird populations on their way to becoming two distinct species. The study, published in the August issue of the <I>American Naturalist</I>, is one of only a few to investigate the specific genetic changes that drive two populations toward speciation.</B></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp">Speciation, the process by which different populations of the same species split into separate species, is central to evolution. But it's notoriously hard to observe in action</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp">This study</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp">captures two populations of monarch flycatcher birds just as they arrive at that evolutionary crossroads</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp">When two populations stop exchanging genes-that is, stop mating with each other-then they can be considered distinct species</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.geneticarchaeology.com/research/Study_catches_2_bird_populations_as_they_split_into_separate_species.asp">It would be all but impossible to try to catalog every occasion on which an all-black flycatcher mated with a chestnut-bellied. 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