Complex sentence: With minimal back-migration of Q-M3 in Eurasia; the mutation likely evolved in east-Beringia, or more specifically the Seward Peninsula or western Alaskan interior, as the Beringia land mass began submerging, cutting off land routes.
Split into simpler sentences: With minimal back-migration of Q-M3 in Eurasia, the mutation likely evolved in east-Beringia, or more specifically the Seward Peninsula or western Alaskan interior. The Beringia land mass began submerging, cutting off land routes.