I want to know the answer to the following question:
Based on the presence of the M78 subclade, where do some researchers think Somalis originated?
All the background I'm provided with is that "Besides comprising the majority of the Y-DNA in Somalis, the E1b1b1a (formerly E3b1a) haplogroup also makes up a significant proportion of the paternal DNA of Ethiopians, Sudanese, Egyptians, Berbers, North African Arabs, as well as many Mediterranean populations.". Is that enough to answer the question?
Answer: no