Arabs claim they descend from Ishmael who was from Abraham & the Egyptian Hagar.
And he will be a wild man; his hand will be against every man, and every man's
hand against him; and he shall dwell in the presence of all his brethren. And Abram was fourscore and six years old, when Hagar bare Ishmael to Abram. And these are the years of the life of Ishmael, an hundred and thirty and seven years: and he gave up the ghost and died; and was gathered unto his people. Ishmael's descendants occupied the region from Havilah to Shur, which is east of Egypt in the direction of Asshur. There they lived in open hostility toward all their relatives.
Genesis 16:12,16 & 25:17,18 NIV
"Michael Hammer at the University of Arizona in Tucson and colleagues, some from Israeli universities, analysed 18 sections of the Y chromosomes from 1,371 men. They came from 29 different populations, including seven Jewish (Ashkenazi (European), Roman, North African, Kurdish, Iraqi and Iranian, Yemenite and Ethiopian Jews), five Arabic (Palestinians, Lebanese, Syrians, Israeli Druze and Saudis) and 16 non-Semitic groups.
The close similarities within the Jewish Y-chromosomes, even from widely scattered populations, was compelling evidence that they all come from a common ancestor. The study also showed that Arabs are closely related to Jews.
Dr Harry Ostrer, director of the Human Genetics Program at New York University School of Medicine, one of the co-authors of the paper, said:
‘Jews and Arabs are all really children of Abraham … And all have preserved their Middle Eastern genetic roots over 4,000 years.’The study also showed that the Jewish populations had generally remained genetically isolated from gentile populations all this time. It is further evidence that modern Jews largely kept the Old Testament laws (albeit with extra man-made traditions) for centuries after they were dispersed, until quite recently." CMI