evolution Flashcards
Darwin
Theory of evolution
Galapagos islands
Darwin studied finches
bajau people
learned to hold breath
Why were Darwin’s ideas controversial
went against christian beliefs
Natural selection
survival of the fittest
Evolution evidence
discovery of old human bones, current evolution, transitional fossils
Convergent evolution
2 separate species develop similar traits
divergent evolution
OG species splits into 2
Gene pool
combination of all genes present in a species
allele frequency
Percentage of allele present ness in a pop
Cladogram
shows shared traits of organisms
Phylogeny
Genetic history of an organism
Vestigial organs
Organs no longer needed
Analogous structure
2 species that are similar in function bit different in structure
Homologous
Similar in structure but different in function
Evolution
Change of characteristics of a species over generations
Speciation
when 2 species evolve
reproductive isolation
Species are so different they wont mate
Geographic isolation
A barrier in between 2 species
Reproductive isolation
when 2 populations cannot breed anymore
behavioral isolation
When 2 species have different mating rituals
temporal isolation
when 2 species reproduce at diff times
Radioactive dating
proved that earth was more than a thousand years old (DEEP TIME)
biogeography
the study of where organisms life now and their ancestors past
