00:01
This first question is talking about gene trees and species trees and how is it that there are some genes where gorillas and humans have a genetic trait that chimps don't.
00:11
And there are some where chimps and gorillas have a trait that humans don't.
00:17
And then there are some where it's humans and chips, but gorillas don't.
00:22
So then the questions we're talking about is what is the difference between a gene tree and a species tree? and then given the lack of agreement between the trees, how's it possible to make a true species tree? so a gene tree is going to be focused on genes.
00:40
It can be maybe one or it can be a few more depending on what and how many you're studying.
00:46
And gene trees are going to be showing the evolutionary history of genes.
00:51
You can use homologues.
00:53
So a gene, let's say, found in mammals that has a homologue and a gene...