How is the age of my paternal or maternal haplogroup calculated?

When we indicate that your paternal haplogroup or maternal haplogroup has such a remote age, it means that from that moment until today, the Y chromosome (in the case of the paternal haplogroup) or the mitochondrial DNA (in the case of the maternal haplogroup) has not undergone significant changes. This indicates that all of your most recent ancestors, whether through the paternal or maternal line, also shared this same haplogroup. The dating refers to when the genetic variant that you define as part of your lineage emerged, providing a time frame for your genetic inheritance.