Lecture 2 Flashcards
What does hypothesis do?
Allow you to make prediction
after observing the variously coloured crab spiders, we can ask: “why do crab spiders match their backgrounds?
- hide from predator
2. hide from prey
What make up 2/3 of known species?
Arthropods
Nomenclature?
System of rules used for naming
Taxonomy?
Practice of naming/classifying organisms
Systematics?
Theory/practice of classifying based on evolutionary history
Phylogeny?
Evolutionary history
Problems with common names?
- Different names for same species
- Same names for different species
- Common name implying relation that doesnt exist
Genus name comes?
First
Specific name comes?
Second
Order of Linnaean system?
Kingdom, Phylum, Class, Order, Family, Genus, Species
Phylogenetic Trees?
Evolutionary trees that shows the evolutionary relationship between organisms (past and present): between common ancestors and descendants
What is a taxa?
A group of organisms
Clade?
Monophyletic group that includes ancestors as well as descendants