Topic 5B

Question 1

microevolution

Answer 1

mechanisms that alter the frequencies of alleles in gene pools within species (ex. mutation, migration, genetic drift, natural selection)

Question 2

macroevolution

Answer 2

patterns on the tree of life at a grand scale across vast time period (ex. stability, gradual change, rapid change, adaptive radiations, extinctions, co-evolutions, convergent evolution)

Question 3

macroevolution is studied through:

Answer 3

the fossil record

Question 4

phyletic gradualism

Answer 4

mutation/migration/genetic drift/natural selection, i.e. evolution, occurs over vast amounts of time (VERY SLOW)

Question 5

anagenesis

Answer 5

the process of speciation that is the result of a gradual and uniform transformation of one species

Question 6

punctuated equilibrium

Answer 6

a model of macroevolution that suggests grand patterns of evolutionary change in the tree of life involves the rapid splitting of one ancestral species into two or more descent species through CLADOGENESIS, often followed by long periods of stasis in the descendant species

Question 7

associate ANAGENESIS with:

Answer 7

PHYLETIC GRADUALISM (SLOW)

Question 8

associate CLADOGENESIS with:

Answer 8

PUNCTUATED EQUILIBRIUM (FAST)

Question 9

macroevolution involves studying:

Answer 9

patterns on the tree of live above the species level and inferring the processes that are likely to have generated these patterns