The Palestinians have been shown to be Genetically closer to the ancient Israelites than the present Israeli population...In a sense the present Jews of Israel are killing their ancestors.
This is simple, Abraham had two sons, one named Isaac (Itzhak) and the other Ishmael, Ishmael is the first Arab? later on the Koran define Ishmael as the true descendant and distinguish the children of Israel(and Isaac the father of Jacob/Israel) although we all considered the sons of Abraham, but the link to the Arabs is closer, not Palestinian in specific which are basically - Arab(originally from neighboring countries).
Thing is the Palestinians can't be genetically closer and in fact nobody does simply because only Jews maintain the genetic line which is why only Jews can share the same genes with the Israelites.
This is a very interesting matter but I don't want to dive into it because it never ends, anyway I assume this is not related to the conflict so see this as my last post on the thread.