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

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 2

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 3

Critics of that theory say the argument will rage on, and they await the results of many more DNA tests. ‘It is a brilliant, innovative piece of work. I just doubt that it can be faulted on technical grounds’, said Milford H. Wolpoff, professor of anthropology at the University of Michigan. But Wolpoff also said that the researchers may have ‘jumped too soon to conclusions’ where there are actually several different ways of interpreting the data. If early human populations were ‘very small and isolated from one another’, gradually each would accumulate ‘different losses [in mitochondrial DNA] until they all came to look really different from each other because of the drift. Of course their last common ancestor would appear to be very far in the past.’ Apart from the claimed dates, this is consistent with the Biblical model, where all people are descended from Noah’s three sons and their wives. These descendants’ languages were confused at Babel, so people separated into small groups and migrated their own separate ways. Nothing in the new data rules out the possibility that Neanderthals interbred with ordinary Homo sapiens, which would make them part of the same species. So-called Neanderthal features are recognizable in some Europeans today. Also, many Neanderthal skeletons show evidence of arthritis and rickets—this, rather than primitivity, explains the stooped stupid-looking posture that most people are familiar with. This is explained by noting that some of the groups from Babel would have lost a lot of their ancestors’ technology, and been forced to live in caves. Such people may have been deprived of sunlight and nutrition. So they would have been prone to diseases such as arthritis and rickets. Neanderthals are one such branch of Noah’s descendants. So in one sense, they are a side branch when compared with humans alive today. This could explain why their DNA is so different from that of living people. But it should be stressed that Neanderthals were still fully human, and descendants of Noah. This might challenge your brain a bit... but It's all in Genesis. Be open to exploring new ideas. The website below could keep you busy for a lifetime with all the information available. I pray that you are brave enough to challenge your preconceived ideas and check it out.

Answer 4

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.

Answer 5

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 6

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 7

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 8

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 9

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 10

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