Classification Flashcards
What is a hierarchy?
Smaller groups within larger groups with no overlap between the groups.
What are the three domains?
Eukarya
Archaea
Bacteria
7 divisions the domains are split into
Kingdom
Phylum
Class
Order
Family
Genus
Species
How do scientists write a species name?
they write the genus name starting with a capital letter and the species name starting with a lower case letter
What is the difference between typing a species name vs writing a species name?
When you type a species name it is in italics whereas if you write the species name, it is underlined
How does classification work?
- As you go through the ranks, the individual show more and more diversity
- The number of similarities and levels of relatedness gets less
- There is one or more species in each genus
- These are closely related and show similar features
What is Phylogeny?
The study of evolutionary relationships between organisms, represented in evolutionary trees
How to tell what species are closely related on an evolutionary tree?
They will appear closer together.
Who do humans share a common ancestor with?
Gorillas
What does Monophyletic mean?
Belonging to the same phytogenic group
On a phylogenetic tree, what do the tips represent?
The species or other taxa that scientists compare
What do the nodes represent and how are they formed?
Nodes represent the common ancestors and from when two branches meet each other
What are sister groups?
Groups that branch out from the same common ancestor
In the binomial naming system what is the correct order?
Genus species
What is an advantage of the binomial naming system?
It allows scientists to communicate all over the world