한국인 조상의 충격적인 생존사, 2만년을 외롭게 버텨내다 (O1b2의 기원)

Human genes are transmitted to future generations in two main ways: One is autosomes, which mix and pass down from both parents, and The other is the Y chromosome, which is passed down exclusively from father to son. Tracing autosomes is complex because they mix over generations, but Y chromosomes are easy to trace because the father's genes are passed down intact to the son. For this very reason, Y chromosome haplogroups retain traces of regions and eras much more sensitively, and are used to track the detailed flow of ancient population migrations. If the Y chromosome lineage is like a thin thread, a thick knot suddenly forms at a certain point, and branches out in multiple directions from there; That thick knot is called a 'haplogroup,' and the smaller branches that split off from the knot are called 'sub-haplogroups.' O1b2 is mainly distributed in Korea, Japan, and northeastern China. Among these, it is distributed with particularly high frequency in Korea, approximately 30–40% of modern Korean men have O1b2 paternal lineage This applies. For this reason, O1b2 is sometimes referred to as a characteristic bloodline of Koreans. Then, what is the origin of O1b2?