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Haplogroup Q or Q-M242 is a Y-chromosome DNA haplogroup. It has one primary subclade, Haplogroup Q1 (L232/S432), which includes numerous subclades that have been sampled and identified in males among modern populations.
Q-M242 is the predominant Y-DNA haplogroup among Native Americans and several peoples of Central Asia and Northern Siberia.
Several branches of haplogroup Q-M242 have been predominant pre-Columbian male lineages in indigenous peoples of the Americas. Most of them are descendants of the major founding groups who migrated from Asia into the Americas by crossing the Bering Strait.[3] These small groups of founders must have included men from the Q-M346, Q-L54, Q-Z780, and Q-M3 lineages. In North America, two other Q-lineages also have been found. These are Q-P89.1 (under Q-MEH2) and Q-NWT01. They may have not been from the Beringia Crossings but instead come from later immigrants who traveled along the shoreline of Far East Asia and then the Americas using boats.
It is unclear whether the current frequency of Q-M242 lineages represents their frequency at the time of immigration or is the result of the shifts in a small founder population over time. Regardless, Q-M242 came to dominate the paternal lineages in the Americas.
North America
In the indigenous people of North America, Q-M242 is found in Na-Dené speakers at an average rate of 68%. The highest frequency is 92.3% in Navajo, followed by 78.1% in Apache,[3] 87%[3] in SC Apache,[21] and about 80% in North American Eskimo (Inuit, Yupik)–Aleut populations. (Q-M3 occupies 46% among Q in North America)[22]
On the other hand, a 4000-year-old Saqqaq individual belonging to Q1a-MEH2* has been found in Greenland. Surprisingly, he turned out to be genetically more closely related to Far East Siberians such as Koryaks and Chukchi people rather than Native Americans.[23] Today, the frequency of Q runs at 53.7% (122/227: 70 Q-NWT01, 52 Q-M3) in Greenland, showing the highest in east Sermersooq at 82% and the lowest in Qeqqata at 30%.[12]
Q-M242 is estimated to occupy 3.1% of the whole US population in 2010:[24]
https://en.wikipedia.org/wiki/Haplogroup_Q-M242
interesting…