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Chapter 17 - Population Genetics and Evolution! (Evolution and the Origin…
Chapter 17 - Population Genetics and Evolution!
Population Genetics
Gene Pool Manipulations
mutations
Accidents
artificial selection (humans)
Natural selection
situations that break natural selection
Genetic clones
universal survival
universal survival with some natural selection:
multiple selection pressures
insect attack
drought
need for pollinators
cold
seed dispersal mechanisms
Definition: a sub-field of genetics that deals with genetic differences within and between populations.
Speciation
Phyletic speciation: where beneficial alleles are spread through an entire population
pollen transfer
seed dispersal
Long distance:
short distance:
vegetative propagation
divergent speciation
abiological reproductive barriers
biological reproductive barriers
hybrid sterility
Adaptive radiation
convergent evolution
Definition: the formation of new and distinct species in the course of evolution.
Evolution and the Origin of life
Pre-origin conditions = heat!
volcanoes and lightning
Chemicals produced chemosynthetically
formation of polymers
aggregation and organization
Oxygen
Presence of life!
