User:Imccrammer/Father Tongue hypothesis

The Father Tongue hypothesis proposes the idea that humans tend to speak their father's language. The hypothesis is based on a 1997 proposal that linguistic affiliation correlates more closely with Y-chromosomal variation than with mitochondrial DNA variation. The initial work was performed on African and European samples by a team of population geneticists, led by Laurent Excoffier. On the basis of these, and similar findings by other geneticists, the hypothesis was elaborated by historical linguist George van Driem in 2010 that the teaching by a mother of her spouse's tongue to her children is a mechanism by which language has preferentially been spread over time.