Lesson 4: Classification & Cladistics Flashcards
(7 cards)
1
Q
What is taxonomy?
A
The science of classifying organisms into groups based on shared morphological features.
2
Q
What is the hierarchy of taxa (from broadest to narrowest)?
A
Domain → Kingdom → Phylum → Class → Order → Family → Genus → Species
(Mnemonic: Dear King Philip Came Over For Great Soup)
3
Q
What are challenges in classifying organisms?
A
Similar morphology doesn’t always mean close relation.
Hybrid species.
4
Q
What is a clade?
A
A group of organisms that includes a common ancestor and all its descendants.
5
Q
What is cladistics?
A
A classification system based on evolutionary relationships.
6
Q
What does a node on a cladogram represent?
A
A common ancestor from which two or more species diverged.
7
Q
What are the three domains?
A
Archaea
Bacteria
Eukarya
