00:01
All right, when several possible phylogenetic trees can be produced from a data set, the most parsimonious tree is either the one that shows the smaller number of synapt morphies, the largest number of nodes, the largest number of analogous characteristics, the smallest number of evolutionary changes, smallest number of branches.
00:21
So between all of these, if we define the word parsimonious, it's not so much, much a scientific word as it is just a big vocabulary word and it essentially means to be frugal or sparing.
00:42
In other word maybe is reserved.
00:48
So the most, the answer that best describes a phylogenic tree that is very parsimonious would be one that is very little variation.
00:59
It may not be small because genetic drift actually acts on smaller populations.
01:05
More so than larger, but it's just, it has to come down to the variation, not necessarily the size of the population.
01:14
So let's go back through these here.
01:16
The smallest number of synapomorphies could be a correct answer because it sounds like something that would be a parsimonious tree.
01:26
So we'll keep that up for now.
01:31
And then the second one is the one that shows the largest number of nodes...
