00:01
For the first philogenetic tree, if all species are descended from species 4, we need to score the gene sequence by comparing your species 3 and species 4.
00:14
For your species 3, you have g -t -t -g -c -a -c -g -c -g -g -c -g -g -c -g -g -g -c -g -a -c -g -a.
00:27
And for your species 4, that is g -t -c -a -a -t -g -a -c -a.
00:43
And the score for this one is negative -8.
00:48
The nucleotides in bold letters, which is the t -g -c -a -a -c -g -g -g -t do not match the sequence of species 4.
01:07
By comparing your species 2 and species 4, so we have species 2 that is a, t -c -a -a -t -g -g -g, g -a -g -t and your species 4, that is g -t -c -a -t -g -a -t -g -a -c -a -t -g -a -c -a.
01:39
And the bold letters here would be your a and g -t and the score is negative 3.
01:51
By comparing your species 1 and species 4 so we have species 1 species 4 for for species 1 you have g c t g g a g g t g t g t g t g t g t g t g t and species 4 you have g t and species 4 you have g t g t g a c c a t g t g c a t g c a and the bold letters will be your c, t, and g.
02:36
And the score for this is negative 4.
02:44
Therefore, species 3 is the most deviated species from species 4.
02:52
And the other two species, your species 2 and species 1, are closer in the phylogenetic tree.
03:00
For the second field genetic tree, after comparing with species four, we need to compare species three with two and one...