Natural Selection Flashcards
What does evolution by natural selection explain?
explains how populations have come to be adapted to enviornments
What did evolution by natural selection reveal?
populations of organisms evolve
Two components of scientific theory?
pattern component and process component
what did lamarack propose?
species are not static but chnage through time. evolution occurs by the in inheritance of acquired characetristics
What is typological thinking?
organisms of a species conform to a specific norm; variation is abnormal
Darwin and Wallace proposal?
evolution occurs by natural selection.
Evidence that species change through time?
Earth’s age, extinction, fossil records, vestigial traits
Aristotles thinking?
Typological and scale of nature
Platos thinking?
Typological
Lamaracks thinking?
change through time and scale of nature; proposed mechanism of change in time; some organisms are lesser
Darwin and Wallace thinking?
change through time and common ancestry
What are the three levels of homology?
Genetic homology, developmental homology, structural homology.