Interbreeding of Neanderthal Man and early Humans?

Question

This question is still bugging the Science world.I have my own little theory that in the DNA pool of some Humans the effect of that interbreeding still exist showing thru the birth of Down Syndome affected humans.What do you think?

Answer 1

I'm sorry to dispute your theory but, downs syndrome is a disease and not a genetic throwback. A missing gene in the evolution link.

     Science still hasn't the answers as to why the Neanderthal man disappeared. It may have been genetic but, until we have proof, it's only theory.

     The most probable concept is that he couldn't keep up with modern man and slowly drifted out of the picture. This didn't happen overnight you know. It took hundreds of thousands of years. He probably started going into extinction many years before he actually realized it was happening. They, on the other hand, might have been incorporated into the modern homosapien lifestyle through intermarriage. Then again, he might still be around you, look at some people and see how closely they resemble the Neanderthal.

    Unti we can get a DNA sample, which is unlikely today, we'll never know for sure.

Answer 2

Scientists have discovered that 5% of the DNA of the average european

is non-homo-sapien, and it is presumed to be neanderthalic. Other races

have not yet been tested for non-homo-sapien DNA.

Answer 3

Your theory would work if you replaced "Down Syndrome" with "Celebrities" , but nice try anyway.

Answer 4

A new study of Neanderthal DNA is expected to come out in 2008..

The 10-year old study which concluded that Neanderthal was only 99.9% identical to early modern Homo Sapiens (Cro-Magnon), was based upon only one bone sample, which concluded that Neanderthal DNA was more extreme than 95% of the people alive today, which implies that 5% of the people walking the earth today have more extreme DNA than a 25,000 year old Neanderthal (That's 350 million, or so). So, I would call that WEAK science...

Since then, 25 more Neanderthal skeletal remains have been found, along with at least 5 Hybrid remains (Displaying part Neanderthal & part Cro-Magnon features)...

Since Cro-Magnon were 100% genetically identical to us, that would indicaticate that we could also successfully interbreed with Neanderthal, had they not disappeared 25,000 years ago...

Answer 5

From what I've recently read, it was found that there was no genetic material interchanged between the neanderthal and the more modern homo sapiens.

Answer 6

Down's syndrom is not genetic in the sense that it is not inherited.  It is a point mutation that occurs on a single chromosome during meiosis.  There is no "gene" for down's syndrom that is passed down from parent to offspring.  It's just an error.

The Neandertal (no need to say "man" - there were women too!)/human thing is still controversial.  Most of the genetic evidence seems to point to no interbreeding; but it's not conclusive yet.  Most of the morphological (physical) evidence seems to support interbreeding; but it's not conclusive yet, either.

Answer 7

First off downs syndrome is an extra copy of chromosome 21 (trisomy) which is a genetic mutation that occurs during meiosis. Second, neantherthal mt-DNA has been extracted from neanderthal remains and compared to archaic humans (Cro magnon) and it was found that little or no genetic exchange happened between the two species. So too bad, your little theory is  incorrect.

Answer 8

I think that is as good of a guess as any, it practically had to happen, the down syndrome part I am up in the air on though.

Answer 9

Look up the mount carmel controversey. It talks about the plausibility of the interbreeding of neanderthals and anatomically modern humans. As for down's syndrome, I believe it is a genetic mutation not a survival from neaderthal admixture.