Evolution part 1 Flashcards
Evolution
idea that species change over time
Variation
Differences among individuals within a species group
adaptation
ability to conform to the enviroment
fitness
if these individuals survive, they have a better chance to reproduce and pass on genes
Vestigial Structure
diminished in size because of disuse
Analogous structure
similar structures, NOT because of common ancestor
homologous structure
similar structures because of common ancestor
convergent evolution
similar structures on unrelated species because of similar enviroments
Divergent evolution
related species evolving differently because of different enviroments
speciation
species evolving from a common ancestor
coevolution
two species evolving complementary structures because of close interaction
punctuated equilibrium
evolution that occurs in short bursts, followed by periods of no evolution
Gradualism
evolution that occurs in consistent small changes over time
