vocab 14-16 Flashcards
absolute dating
measures decay rate of radioactive atoms
relative dating
deeper layers are older
biogenesis
the theory that living organisms come only from other living organisms
bottleneck effect
removes genetic variation when a population is reduced
fossils
the remains or traces of a once living organism
founder effect
small groups decide to start a new population
Hardy-Weinberg Equilibrium
the stability of gene frequencies across generations
natural selection
the process by which organisms with favorable variations produce at a higher rate than those without such variations
speciation
the formation of new species
spontaneous generation
an early and new disproved hypothesis that living organisms develop from non living material