Tbh, this is a little statistical misnomer. There’s a high probability that over half of us is a direct descendent of a single Roman citizen, and I remember a report that a significant proportion of Asian population can trace through one of lines to Genghis Khan.
This is simply because you have 2 parents, 4 grandparents and 8 ggp and so on. Eventually this exponential growth lead to a size greater than the world population. 30 generation would mean more than 1 billion ancestors, and a lot of that would intersect, while the chance of having a certain individual be part of your ancestry greatly increases.
This is simply because you have 2 parents, 4 grandparents and 8 ggp and so on. Eventually this exponential growth lead to a size greater than the world population. 30 generation would mean more than 1 billion ancestors, and a lot of that would intersect, while the chance of having a certain individual be part of your ancestry greatly increases.