Unit 1 Flashcards
What are the 5 unifying thmes of life?
Organization, Information, Energy & Matter, Interactions, & Evolution
Darwin’s Observations (2)
Individuals in a population vary in their heritable characteristics
Organisms produce more offspring than environment can support
Empedocles
Process of selection
Aristotle
Scala Naturae (Stairs of nature)
-Thought life forms were on a scale of complexity & didn’t change
Lucretius
-Observed bones in rocks in Athens, predicted species arose from earth, formed from combo of elements
-Selection led to extinction of past organisms
Carl Linnaeus
Established Binomial nomenclature (grouping based on characteristics)
James Hutton
Geological features explained by gradual processes
Charles Lyell
Proposes uniformitarianism - Things that happen today are the same that happened in the past
Georges Cuvier
One of first t put fossil skeletons together, put into Linnaean groupings
Thomas Malthus
Capacity to increase is greater than food supplies & other resources
Lamarck
Directionality of Evolution - Species change over time & are adapted to environment
-Use & Disuse
-Inheritance of acquired characteristics
Descent with Modification
Organisms evolve through natural selection & adapt to environment
Adaptation
Inherited characteristic – enhances survival & reproduction in a specific environment
Natural Selection
process in which individuals with particular inherited traits will survive & reproduce at higher rates than those without the traits
3 broad observations of Darwin
- the unity of life
- The diversity of life
- The match between organisms & their environment
James Hutton
Earth’s features due to gradual mechanisms
