darwin and theory of evolution

charles darwin

• served as naturalist on mapping expedition around coastal South America

• 30 yrs of observation and study

  • published On the Origin of Species by Means of Natural Selection

natural selection

a mechanism proposed by Darwin

geometrically

populations of plants and animals increase by _____

arithmetically

humans can only inc. their food supply ______

comparative anatomy

vertebrae forelimbs all share the same basic array of bones

homologous

same evolutionary origin but now differ in structure and function

analogous

structures of different origin used for the same purpose (ex. butterfly and bird wings)

phylogenetic trees

based on tracing origin of particular nucleotide changes to reconstruct an evolutionary history