Palestinians have Jewish ancestry

Palestinians come from Arabized Jewish Ancestry, not Arab. 
Over the years many Palestinians have admitted of coming from Jewish ancestry, along with Judaic traditions in their culture. They would carve Star of Davids in their homes before 1948, they would light candles in Prayers, on Friday Nights (Shabbat), some Palestinian graves also had Star of Davids and Menorah carved. 

Recent DNA has also confirmed that most Palestinians don't have not close or related DNA genetics, but the SAME DNA genetics as Ashkenazi Jews, Sephardic Jews and Mizrahi Jews. During the Arab invasion and conquest of the Holy Land, the 10-15% of Jews & Samaritans who remained living in the land (After the Romans exiled most Jews) were Arabized and converted to Islam in 636 AD, but yet they still kept some Jewish traditions alive in their family and culture.

This gives Palestinians a even more reason to recognize the Hebrew Jewish State of Israel and to convert to Judaism if they want and return back to their true nation. I'm sure their Hebrew ancestors would be glad to see this.