what's the signifance behind D-M15 and N3(Tat) DNA again?
It's just a marker and doesn't mean anything by itself. But the frequency of it and comparing it among other people's is when these markers get interesting because it can possible paint a picture of your people's journey since the dawn of mankind.
M130If you look at the frequency chart (near the middle of the page), it appears we have more frequency of M130 than Han Chinese and Koreans. In other words, this study suggests Hmoob are more related to Altaic, northern Asian people (Mongolians, Siberians, etc) than eastern Asian Han Chinese and Koreans.
But remember, it's a study based on scientific thought and scientific thought is not truth-seeking. And this is not history. Be very careful of what you interpret to be actual history from this study.
Don't be like that idiot on asiafinest and start calling markers as "Hmong gene marker" and claiming us as "the one true Hmong". Because while the study shows that Hmong have 33% of M7 marker frequency, Zaomin, Bunu and She northern subjects of this study shows a 32%, 30% and 25%, respectively. I doubt these people would accept being called "Hmong relatives", vice versa.