Historian Dr. . Jennifer Doyle is here with my results, which means this is either my big Irish reveal or a very awkward plot twist. >> What do you think you are before we start.>> Um, I mean, I would just say half Irish, half English. >> Okay, let's have a look. [Music] >> Oh. Oh, wow.Okay, 56% Irish. So then that means that my dad must have been a bit Irish as well. >> Yeah, it's roughly in line with your dad having an Irish greatgrandparent.>> Oh man, I wish my dad was still alive. He would have loved th ...

How does an individual’s ancestry link it to the rest of the tree of life, and how is it all shaped by natural selection? The fifth of our biology primers explains the concept of species https://t.co/3JrSScVuJO ...