Pyrpolizer wrote:GreekIslandGirl wrote:Pyrpolizer wrote:GIG, how do you explain the fact that only one species developed (through evolution) to our human intelligence?
I mean if everything happened through evolution by pure chance then hundreds of mammals should of until today grow similar to our intelligence isn't it?
Also is it true that within evolution each species is normally divided by nature to lots of other sub-species?
What happened to our own human sub-species?
The problem with us and our "intelligence" is that we are good at killing off competitors - so, goodbye Neanderthals and goodbye Cro Magnon man (two of our recent cousins). We do, however, still have other close relatives like Chimps which share 96% DNA similarity (more than 99% in some specific genes). We are so close, we can pass diseases to each other .... like HIV
Actually that's an assumption GIG.In reality we don't know how the Neanderthals who lived all over Europe finally disappeared, it could be from climatic changes. As for the Cro Magnon they were never extincted, we are actually their decedents.
That's not accurate. We are not necessarily descended from Cro Magnon although some of us with haplogroup N subtypes would have some of their DNA from interbreeding or shared parentage with Cro Magnons. Same with Neanderthals. Most Europeans and some Asians have 1 to 5% Neanderthal DNA but Africans have none. So we do have genetic diversity within the present human population.
Regardless that's not what I meant. I meant, why there in nature are hundreds of genetically different say cats, dogs, horses etc of about the same intelligence, whereas there are no genetically different humanoids of about the same intelligence?
The excuse that the specific type from which we descended was the deadliest creature on planet, and could eradicate any competitors right from the start, could not be true for remote areas, like Australia for example.
So where are they?
As I said, our "intelligence" has prevented the onset of any other species that can truly compete with us. But genetically, cats and tigers, for example, although in the same family are only as related as we are with chimps (95 - 96%). If we were not around, the Chimps would probably be the unique, most intelligent species around - but at the moment it's us. Within the cat family, there are variations in intelligence - as there are among Dogs.
http://en.wikipedia.org/wiki/The_Intelligence_of_Dogs
