BIO 110- EXAM 4 QUESTIONS WITH
CORRECT ANSWERS
population genertics - Correct Answers -the frequency of an allele is NOT determined
by whether it is dominant or recessive (dominant traits aren't necessarily more frequent)
gene pool - Correct Answers -the collection of all alleles present (for a particular gene
locus) in a population
allele frequencies - Correct Answers -frequencies of particular alleles in the gene pool
the Hardy-Weinberg principle - Correct Answers -both genotypic frequencies and allele
frequencies remain constant over time if no micorevolution has occured
assumptions of the Hardy-Weinberg principle - Correct Answers -1. no natural selection
2. random mating
3. no random genetic "drift"
4. no migration (no "gene flow")
primary succession - Correct Answers -community change from "ground zero" (newly
available habitat)
secondary succession - Correct Answers -change following disturbance (but not
complete elimination) of a previously existing community
pioneer species - Correct Answers -the first species to arrive in a community
random genetic drift - Correct Answers -a change in allele frequencies by chance in
small populations
population bottlenecks - Correct Answers -genetic drift in populations temporarily
reduced to small size (overhunting)
populations - Correct Answers -group of potentially interbreeding individuals of the
same species
communities - Correct Answers -group of species sharing the same habitat
ecosystems - Correct Answers -biological and abiotic processes and interactions within
a given region
CORRECT ANSWERS
population genertics - Correct Answers -the frequency of an allele is NOT determined
by whether it is dominant or recessive (dominant traits aren't necessarily more frequent)
gene pool - Correct Answers -the collection of all alleles present (for a particular gene
locus) in a population
allele frequencies - Correct Answers -frequencies of particular alleles in the gene pool
the Hardy-Weinberg principle - Correct Answers -both genotypic frequencies and allele
frequencies remain constant over time if no micorevolution has occured
assumptions of the Hardy-Weinberg principle - Correct Answers -1. no natural selection
2. random mating
3. no random genetic "drift"
4. no migration (no "gene flow")
primary succession - Correct Answers -community change from "ground zero" (newly
available habitat)
secondary succession - Correct Answers -change following disturbance (but not
complete elimination) of a previously existing community
pioneer species - Correct Answers -the first species to arrive in a community
random genetic drift - Correct Answers -a change in allele frequencies by chance in
small populations
population bottlenecks - Correct Answers -genetic drift in populations temporarily
reduced to small size (overhunting)
populations - Correct Answers -group of potentially interbreeding individuals of the
same species
communities - Correct Answers -group of species sharing the same habitat
ecosystems - Correct Answers -biological and abiotic processes and interactions within
a given region
