00:01
Hello students, in this question we have been given four groups of sequences.
00:07
So first we have to list the three possible trees with a as the out group, the sequence a as the out group.
00:19
So three possible trees are b, c and d.
00:26
So this is one.
00:28
Two will be b, d and c and three will be c, d and b.
00:40
So there are only three trees we are considering when for a as the out group which means it is most distantly related species.
00:50
This leaves us with three species b, c and d to arrange in the tree and there are only three possible ways to arrange them.
01:03
So let's mark the nucleotides for each of them.
01:08
Now for the tree 1, that is b, c, d.
01:11
B and c has 6 at 6th position.
01:16
G in c...