That is a lie. There is no such DNA study. You would not be able to come up with the people who took part in those "studies" if your life depended on you.
And it continues to be odd that the Muslims, Kurds or Arabs, met with no such Palestinians when they invaded in the 7th Century. They met the indigenous Jews, and only the Indigenous Jews as written in Islamic sources.
Who exactly are you trying to influence with your lies? Any success so far?
Sure they did. You're confusing Arabs with Muslims. Omar invited the Jews to return to Jerusalem. There's more to history than just Jewish history. Look at the travel journals of Ibn Battuta and Rabbi Benjamin Tudela..... very few Jews. There's lots of DNA studies. Remember too that Moses and Abraham had Arab wives.