We cannot use ancient texts to talk about distinctions between groups in the modern age. Palestinian Muslim DNA is a mix - primarily East Mediteranian aka ancient Palestinian with Jewish, Arab (arabian peninsula -usually less than 15%) and very small percentages of, Turkish, North African, West Mediterranian. The concept of pure races and tribes is impossible in a region with so much invasion, conversions between faiths etc is impossible. There is no 2 clear lines between Abrahams sons (incidentally Abraham had more children with his servants).

The problem is due to the founding of Israel families have been broken up and people expelled from homes within living memory. Palestinians have paid the price for the actions of Europeans in WW1 and for the Iraqis, Yeminis and Egyptians etc who expelled their Jewish countrymen. This is a human rights issue, bringing outdated and inaccurate history into it doesn't help resolve any issues.