 If the first inhabitants were abandoned prisoners, this explains, according to Álvarez Delgado, their lack of navigational acumen.Genetic analysis using mitochondrial DNA points to the Moroccan Berbers as the African population most closely related to the Guanches.Archaeology suggests that the original settlers arrived by sea, importing domestic animals such as goats, sheep, pigs and dogs and cereals such as wheat, barley and lentils.