Recent studies make clear no significant [[genetics|genetic]] differences exists between Arabic-speaking Moroccan populations and non-Arabic speaking Moroccan populations. The human leukocyte antigen [[Human leukocyte antigen|HLA]] [[DNA]] data suggest that most [[Moroccans]], both those of non-Arab [[ethnolinguistic]] identity and those of Arab ethnolinguistic identity, are of [[Berber people|Berber]] origin, and that the genealogical true [[Arabs]] from Arabia who invaded not only Morocco, but the rest of [[North Africa]] plus [[Spain]] in the 7th century, did not substantially contribute to the gene pool. The Moorish refugees from [[Al-Andalus|Spain]] settled in the coast-towns.