EVOLUTION

MICROEVOLUTION – at a population level

MACROEVOLUTION – at a species level

Two types

NATURAL SELECTION population level

Driven by

Changes in allele frequency

Genetic drift (founder’s effect or bottleneck effect) population level

Gene flow (transfer of alleles between pop)

NATURAL SELECTION

Results from

Results from

SpeciationReproductive isolation

Condition

Results from

Allopatric speciation

Sympatric speciation

Two types