Hmm, I found what I was talking about on a christian website, but I'm pretty sure I've heard it before from islamic sources. I think.
"Shem was Noah's oldest son. Abraham's lineage came through Shem, and he is the father of all the Semitic races. (Actually the word "Semite" comes from the word Shem.) He is the ancestor of the Jews and Arabs, the Babylonians, Phoenicians, Assyrians and other peoples from the region of the eastern Mediterranean, as well as the yellow races of the far east.
Ham was the second of Noah's sons. His sons were Cush, Egypt, Put and Canaan, and his descendants include the Ethiopians, Egyptians, Libyans, and the black African nations.
Japheth was Noah's youngest son. He was the father of seven sons, and the Greeks, the peoples of Europe - and all the lands they settled, such as America - are his descendants."
source