00:01
This problem asks us to identify the domains of life.
00:04
And domains are the big categories that separate all living organisms.
00:09
When i was in school, we learned the organization of organisms as ordered kingdom, phylum, class, order, family, genus, and species.
00:20
Going from the broadest, which was kingdom, and the narrowest, which was species.
00:25
We used the mnemonic kings play chess on flat green squares.
00:29
I don't know if that was easy to remember than just the words or themselves or not.
00:33
But nowadays, there is a larger categorization which better represents the relationships between these living organisms.
00:41
And there are three big domains into which all living organisms are grouped.
00:49
All right, time for a little movie magic here.
00:51
Let's grab our three domains in the tree of life.
00:55
So this is just a selection of some of the species that have diverged from each other in the tree of life.
01:01
This left part of the tree here represents bacteria...