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:::::Bacteria commonly share information from one to the other using plasmids. This is seen in how some bacteria can become resistant to antibiotics. Though I have no actual evidence to support it(I didn't google) it seems logical to me that this was the beginning of sexual reproduction. I'm not terribly knowledgeable about evolutionary biology but this seems to be the earliest form of pseudo-sexual reproduction and it obviously came about due to a need for genetic variation in the species since, as is known, asexual reproduction does not provide variation. That is the extent of my knowledge of that so if anyone else knows more about plasmids and how they developed it would be wonderful. [[User:Ayzmo|Ayzmo :)]] 21:17, 12 January 2012 (EST)
 
:::::Bacteria commonly share information from one to the other using plasmids. This is seen in how some bacteria can become resistant to antibiotics. Though I have no actual evidence to support it(I didn't google) it seems logical to me that this was the beginning of sexual reproduction. I'm not terribly knowledgeable about evolutionary biology but this seems to be the earliest form of pseudo-sexual reproduction and it obviously came about due to a need for genetic variation in the species since, as is known, asexual reproduction does not provide variation. That is the extent of my knowledge of that so if anyone else knows more about plasmids and how they developed it would be wonderful. [[User:Ayzmo|Ayzmo :)]] 21:17, 12 January 2012 (EST)
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::::::We should also remember that one of the biggest sources of gene exchange among bacteria, besides plasmids, is in fact bacteriophage viruses. They can infect one bacteria and ferry genetic material from it to another bacteria, and something like 70% of ocean-dwelling bacteria on earth today are in fact infected with a bacteriophage of some kind. So, to answer your question, PhilipN, it is possible for only one bacteria to have developed the trait, but if that bacteria was infected with a virus, as most are, those genes would have been spread to other bacteria in the vicinity, giving them the ability to reproduce sexually as well.[[User:TonyPark|TonyPark]] 12:17, 13 January 2012 (EST)
    
==Why are the (expected) countless millions of transitional fossils missing?==  
 
==Why are the (expected) countless millions of transitional fossils missing?==  
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