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Africans may be more genetically fit
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[QUOTE]Originally posted by Djehuti: [QB] [QUOTE]Originally posted by Grumman f6f: [qb] Aren't most systems on this planet built this way.[/qb][/QUOTE]By systems, I take it you mean living organisms. Yes they are. But how genetically fit depends on the organism and its relation to its environment. [QUOTE][qb]What does that mean? Which other populations on this planet are less genetically diverse such that they won't be able to survive and compete in their environment? How does one explain the Bubonic Plague that killed millions of Europeans, or so I've read. Were they less genetically diverse? If they were less then why are they still here? Or was it the killer plague ran its course before the Europeans needed some of that diversity help you're talking about.[/qb][/QUOTE]Apparenlty you don't understand the concept of '[i]in relation to[/i]'. I never said non-African populations have no genetic diversity or fitness at all, but that it is less than those of Africa. In the case of Bubonic plague of Europe, the main reason why Europeans still exist is that simply the plauge ended! However, there is a genetic reason also as to why some who got sick survived and it does indeed have to do with genetic diversity. It's now know that some Europeans were resistant to the plague due to a unique mutation, and interestingly it is this same mutation that makes them immune to HIV. Of course not all Europeans have this mutation which is why alot more Euorpeans whould have been wiped out if the plauge itself had not ended. The point is Africans have even greater genetic diversity than populations of Europe or anywhere else which is why they have better chances at surviving similar scenerios. Another example would be the heterozygous state of sickle cell allele which does not cause disease but even confers resistance to the parasite that causes Malaria. There are 4 forms of sickle cell in the world with 3 of those originating in Africa, again due to Africans' greater genetic diversity. [/QB][/QUOTE]
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