Exam 1 Flashcards
Scientific method
Observed, tested, replicated, and verified
Paradigm shift
Fundamental change in how we think about and study nature. Specifically the origins of diversity of life and relationships between species
Jean-Baptiste Lamarck (1744-1829)
- First to publicly suggest species had changed over time
- mechanism of change: saquitos characteristics are passed on to offspring
James Hutton (1726-1797)
-geology man
- earth is continuously being formed
- earth is older than we thought
Runaway Sexual Selection
- Can occur when genetic correlation between preference and trait is high
- Over generation, preferred trait becomes exaggerated
Intrasexual Selection
Competition between memebers of the same sex for the opportunity to mate with member of opposite sex
Sexual Conflict
“sexual antagonistic coevolution”
- traits that evolve in one sex are detrimental to the other sex
Charles Lyell (1797-1875)
Pillars of Pozzuoli
- noticed marble of pillars had been pierced by a marine bivalve
- cannot live above lowtide so it must have been below water
- columns had been raised back up by volanic eruptions
Uniformitarianism -Hutton and Lyell
- Slow processes over long stretches of time can produce vast changes on Earth
Thomas Malthus (1766-1834)
- English economist
Erasmus Darwin
darwins grandpa
“single living filament”
Charles darwin
theory of evolution by natural selection (1859)
Alfred Russel Wallace
natural selection, collab with darwin
Limitations to natural selection
lack of genetic variation
physical constraints
evolutionary arms race
lacks forsight and environment is always changing
Interselection
mating preferences of one sex affects the traits of the other sex
- direct benefits
- good and costly genes
- sensory bias
