Genetics

Several months back there was an article about a bear hunt in Canada. The man at the center of the article had a tag for a polar bear. He hired an Inuit guide, and landed a very strange looking bear. It was white like a polar bear, but had the body type of a Grizzly. Canadian authorities seized the bear, and he was facing a tough fight and charges of illegally taking critter.
In the end, it was determined the bear was in fact a hybrid, a cross between a grizzly male and a polar female. Scientists considered this remarkable. Up to that point it was not believed that the two species could interbreed, they certainly do not interact well. When the two groups collide, the smaller grizzlys are much more aggressive than their larger cousins.
Other examples of linear breeding exist, lions and tigers are distinct species, or so it would seem, yet they can mate and reproduce. The offspring is called a liger, and is an awesome animal, BUT it never stops growing, and that factor leads to its early demise.
We see the same thing in dogs. some breeds just do not mix with out a fight. Whether it be pitbulls and yorkies, or coyotes and wolves, when they cross paths, there's trouble in town. What of the human species? We all share the same root DNA. After Noah got off the ark, there were exactly eight humans on planet earth. From that select group all man kind has come. The same is true with dogs, a very small gene pool started it all.
Human nature being what it is, when two worlds collide, one or both of two things happen, they feud, or they fornicate. Its not bad, it just is. For small populations such as the Inuit, the arrival of strangers was viewed as a good thing, they understood that interbreeding was hurting their people. If you don't follow what I'm stating, read "The Northwest Passage", or "Give your Heart to the Hawks". Again, I'm not being judgemental, I am merely stating what is and was.
The collision of people also resulted in some massive fights. Some of it has to do with the culture, but I wonder if part of it is just good, no, bad old genetics. Right now the biggest problem in that regard is muslims. They don't get along with the Jews, they don't get along with Indians, they don't get along with Russians, they don't get along with Belgians, they don't get along with the French, heck, they don't get along with each other.
By contrast, the French and Belgians get along, the Russians and the Indians get along, Every one hates the Jews, but its because they have all the money.... America is the melting pot, we have people from every tribe and tongue and they pretty much all get along. Except. The. Mooslims.
We all know that not every human will live in harmony with every other human. We all have our disagreements. Some times it is money, other times love. Loud music, bad barbecue, shitty beer and too much of it, they all cause conflicts, but when you factor those things out,  and get it down to just people, the folks who are muslims just do not get along.
I know, I know, muslim is not a ethnic subset, its misery made up as a religion. Still though, I see genetics at work there. Examine for a moments the many other religions of the world. No one is born into a religion. It is something that we all learn as we mature and people leave religions for any number of reasons. A person may be Catholic for fifty years, then one day decide to become hindu.
Many religions send out missionaries. Only one group sends them out with orders that say convert or we kill ya, and that is islam. Do we ever see Methodists going bat shit crazy when some one opts to head over to the Pentecostal tent? If a sunni switches to shiite though, his days are numbered!
Their evangelism is convert or die, and many people, lacking confidence in their salvation convert. Leave the cult? That merits death as well. What does it say about the minds of those who believe the satanic verses if the only way to get folks to worship it is to kill the ones who won't?
Am I saying all who belong to islam are dumb as a rock? No, some are there out of fear. You won't find them wearing bomb vests onto buses or flying planes into buildings. They stick around only out of fea even when they know in their heart it is total BS.

The Jews and the Arabs share common ancestry long past Noah. Jews are decendents of Abraham via Isacc, his son from Sarai where the Arabs descend from Ishmael whom he fathered via Hagar the Egyptian. We don't see that kind of conduct from Jews.
Am I wrong to say genetics is the heart of the problem? Is there some other explanation?