IDIOT!
Many Jews and "Palestinians" are actual cousins, cut from the same DNA cloth. Culture does not equal race.
Even if the Arabs imposed their language, it doesn't necessarily involve a large influx of people from Arabia--compare how the Spanish language took hold in parts of Latin America where the Spanish colonists were outnumbered by the indigenous population.
So DNA studies should show some kinship between Israeli Jews and at least some of the Palestinian Arabs.