Their data supported previous studies on Y chromosome haplogroups, and also revealed more information about possible branching patterns.

他们的数据支持了之前关于 Y 染色体单倍群的研究，也揭示了更多关于可能的分支模式的信息。

And based on these haplogroups, they used mathematical models to come up with an evolutionary, or phylogenetic, tree.

基于这些单倍群，他们使用数学模型提出了进化树或系统发育树。

Once they recorded all of these variations, they sorted people with more similar Y chromosomes -- and therefore more likelihood of sharing a common ancestor -- into categories called haplogroups.

一旦他们记录了所有这些变异，他们就会将具有更多相似 Y 染色体的人——因此更有可能拥有一个共同祖先——分类到称为单倍群的类别中。