Definitions Flashcards
Classification
Arranging organisms into groups based on similarities
Taxonomy
The study of classification
Why do we classify organisms
Identify species
Predict characteristics
Evolutionary links
Define species
Smallest taxonomic group
Able to produce fertile offspring
5 kingdoms
Prokaryotes Protocitsta Fungi Plantae Animalia
Sister group
Two defendants split off from same node
Node
Where a line branches off
Evidence for evolution
Fossils- palaeontology
Similarities between animals
Chemical differences between organisms
Divergent evolution
Species divert into two different species over time
Variation
Difference In characteristics between an organisms
Inter specific variation
Differences in organisms in same species
Intraspecific variation
Differences between organisms of same species
Continuous variation
Characteristic that can take any value
Eg mass
Discontinuous variation
Discrete result
Blood type
Polygenic
A characteristic controlled by a group of genes