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Population Genetics and Evolution (artificial selection (Adaptive…
Population Genetics and Evolution
population genetics
abundance of different alleles within a population
...
population concept of species
ranges of variation
gene pool
total # of alleles in all the sex cells
artificial selection
humans change the allele frequency of gene pool
Adaptive radiation
species rapidly diverges into many new species
over a short period of time
natural selection
survival of the fittest
factors not part of natural selection
purpopse
intention
planning
voluntary decision making
speciation
evolution of species
phyletic
gradually changes
divergent
some pop evolve into new second species
gene flow
alleles move physically through space
..
abiological reproductive barrier
nonliving feature that prevents populations from exchanging genes
geographic speciation
biological reproductive barrier
any biological phenomenon that prevents successful gene flow
sympatric speciation
prezygotic isolation mechanisms
pollination nor fertilization neither occur
hybrid sterility
inter breeding or artificially cross pollinated
produce viable seed
but seed is a sterile plant
