Day 4 Classification and Phylogeny
Karl von Linne
-In the 1700's Linne also known as Carolus Linnaeus created the binomial naming system for organisms that we use today
-He gave animals a Genus and Species name (binomial name) and when animals fit with other groups based on their characteristics he placed them in an even larger Taxon
A taxon is a grouping
Taxons
Domain
Kingdom
Phylum
Class
Order
Family
Genus
Species
Human
Eukarya
Animalia
Chordata
Mammalia
Primates
Hominidae
Homo
sapiens
Dog
Eukarya
Animalia
Chordata
Mammalia
Carnivora
Canidae
Canis
familiaris
Watch this short video on taxonomy.
Domain is the largest of the Taxon
There are 3
Eubacteria
Archaea
Eukarya
-Bacteria and Archaea are both prokaryotes
-A Prokaryote has no nucleus and a Eukaryote has a nucleus
-All prokaryotes are single celled organisms
-Eukaryotes can be single celled or multicellular
-The single celled Eukaryotes are called Protists
There are 4 kingdoms of Eukarytes
Animalia
Plantae
Fungi
Protista
In Zoology we only study the Kingdom Animalia
-Within the kingdom of animalia there are around 35 phyla. We will be studying the most common 9 of them
Animal Systematics is the process of arranging animals into groups to reflect their evolutionary relationship
-Now that DNA sequincing has become common animal systematics is constantly changing due to new DNA evidence
-Systematics uses phylogenetic trees
-A phylogenetic tree is a chart that shows the evolutionary development of traits and as a result shows the evolutionary relationship between organisms. Here are some phylogenetic trees of the phyla we will be studying
Phylogenetic trees can be as detailed as you need them to be.
Within systematics and creating phylogenetic trees there is the study of Cladistics
-Cladistics is a process of creating taxonomical groups called Clades
-A Clad is a group that shares a derived characteristic
Monophyletic vs Paraphyletic
-Monophyletic is when a clad includes all of its most recent ancestors
-Paraphyletic is missing an ancestor and is therefor not accurate
The phylogeny of the great apes
Watch this short video on what is a species. Create a box in your sketchbook or section, title it "What is a Species" and take notes, write down definitions, examples, and questions you might have.