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| Re: Earths Magnetic Feild/Currents Reversing? (165394) | |||
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Re: Earths Magnetic Feild/Currents Reversing? |
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Posted by Subterranean Railway on Fri Nov 3 15:52:42 2006, in response to Re: Earths Magnetic Feild/Currents Reversing?, posted by Olog-hai on Mon Oct 30 21:35:25 2006. Nobody has observed evolution as a process (i.e. the genesis of a new species), even via allele frequency shifts.Incorrect. I take it that you've never heard of Culex molestus. In the 1860s, members of the London mosquito population migrated into the newly constructed Underground. Their isolated environment forced them to change feeding and mating tactics. C. pipiens, the surface species, rarely bites humans, instead focusing on animals. The underground species, dubbed Culex molestus, only bites humans. It also follows radically different breeding patterns. Indeed, after only 150 years, C. molestus has been determined to be a new species. It cannot successfully interbreed with C. pipiens. Contrary to your claim, there have been many such observed instances of speciation. Not to mention the fact that viruses/bacteria often mutate and adapt themselves into new niches. The HIV virus is a prime example of this: The virus that causes AIDS is very different than the chimpanzee-specific virus. Looking at criteria for differentiating asexually-reproducing species, it's clear that viruses and bacteria have generated many new species. |
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