And it's by looking at the pattern of genetic variation, the pattern of these markers in people all over the world, and assessing the relative ages when they occurred throughout our history, that we've been able to construct a family tree for everybody alive today.
Y es al ver el patrón de variación genética, el patrón de estos marcadores en las personas de todo el mundo, y evaluando la edad relativa cuando ocurrieron a través de la historia, es que somos capaces de