Evolution Flashcards
Taxonomy and purposes
The science of classification of organisms
1- identify organisms
2- providing a basis for recognizing natural groupings of living things
Binomial nomenclature
Genus name and species name, genus capitalized and species is not, in italics
Analogous structures
Streamline appendages
Fun, wing, flipper
Homologous structures
Pentadactyl limbs
Human, cat, whale, bat
Vestigial features
Structures that through the course of evolution have lost their function, they remain in the body because they are not harmful
Lamarck
Individuals are capable of transforming, internal drive
Darwin Wallace
Individuals are fixed and unchanging but the population is capable of transforming
Natural selection
Types of natural selection
1- stabilizing selection.
2- directional selection.
3- diversifying selection.
Rates of evolutionary change
1- gradualism, slow steady change
2- punctuated equilibria, short periods of rapid change