00:01
So given these different species and the six traits we are looking at, we are going to make a phylogenetic tree or a cladogram.
00:09
So the way to approach these is to always try to find similarities between different species and see which species, you know, are very similar to others and which ones are only similar to one or two.
00:21
So for example, i find that looking at the last three of these traits, four, five, and six, all of them have trait four in common, right? they're all c.
00:36
So that is the trait all of them have in common.
00:39
So it's gonna be like way back at the beginning.
00:44
Trait five and six, there's two options, right? we have three here who show tc, tc, tc.
00:55
Two of them have ct and then one of them has tt.
01:00
So that means that likely what we're dealing with is x being one of the first species and then you have two different branches that came off of that.
01:12
A and e who have cct and then bc and d who all have ctc, right? so that's gonna be where we start.
01:24
I'm gonna say that down here at the bottom we have trait four that they all have in common and then we get species x and then that branches off into two different clumps.
01:43
A and e and then bct.
01:45
So we're bcd.
01:47
So we're gonna focus on one of those sets at a time since a and e are smaller.
01:51
Let's focus on those first and see how those two differ.
01:57
So out of a and e, i see that the only difference is at trait three.
02:05
E has aaa and a has aag, right? this is the only difference between them.
02:19
And so if we look at the common ancestor of x, x has a.
02:26
So that means e is closer to x.
02:31
So we're gonna put e right here and then a we'll put right here.
02:39
And if we look what separates a and e is trait three...