[Mediterraneo10]

While a relationship between Japan and certain lost languages of the Korean peninsula is agreed upon by nearly all scholars, that still doesn’t necessarily mean that Japanese and Korean are related. One recent school of thought, for example, is that pre-Proto-Japanese entered the Korean peninsula from mainland China (Shandong province) while Korean came down from the north, so they would not be genetically related in spite of being neighbours.

[garmaine]

I was referring to human genetics.