2026/2027 Biology 30 Alberta: Population and Community Dynamics Questions and Answers Already Passed (GRADED A+)

2026/2027 Biology 30 Alberta: Population and Community Dynamics Questions and Answers Already Passed (GRADED A+) How does mutation lead to gene pools changing? - Answer alleles mutate into another form; important for variation How does natural selection lead to gene pools changing? - Answer not all individuals have ability to produce offspring; "survival of the fittest" How does non-random mating lead to gene pools changing? - Answer mating based on proximity and preference; not all individuals have equal chance of finding mate How does gene flow lead to gene pools changing? - Answer migration; lose via emigration; gain via immigration Does gene flow lead to a new population? - Answer No. How does genetic drift lead to gene pools changing? - Answer creates a new population; certain alleles become overepresented What are the two types of genetic drift? - Answer bottlenecking & the Founder effect What causes bottlenecking? What happens to survivors? Give an example. - Answer disastrous situations; death is unselective; survivors create a new gene pool; may not match original allele frequency. Example: hunting of elephant seals