Yes we do. God told Abraham that he would be: "father of many nations". Genesis 17:5
"genetic studies have found that the CMH-the Cohen Modal Haplotype-a haplotype of the MED (J) haplogroup-is not exclusive to Kohanim, and not unique to Jews. It is also found in
significant percentages among other Middle Eastern populations, and to a lesser extent, among southern Mediterranean groups. A haplotype is a group of distinct DNA markers—neutral nucleotide mutations, which when found together indicate a lineage. These particular markers were discovered on the Y-Chromosome, which is passed from father to son, without change, thus establishing a paternal lineage pattern.
All of the above is scientific fact, which has only become known in recent years."
http://www.simpletoremember.com/articles/a/abraham-lineage/