WorksheetsUnit 3 (Section 2) Review
Total questions: 15
Worksheet time: 8mins
How does one measure how common a certain allele is within a population?
genetic drift
allele frequency
gene flow
normal distribution
The normal shuffling of alleles during meiosis results in which of the following?
reproduction
gene flow
recombination
mutations
Which type of selection is displayed by the following graph:
directional selection
stabilizing selection
no selection
disruptive selection
Which type of selection is displayed by the following graph:
no selection
stabilizing selection
directional selection
disruptive selection
Which type of selection is displayed by the following graph:
disruptive selection
stabilizing selection
no selection
directional selection
What do we call chance changes in allele frequencies within a population?
genetic drift
gene flow
natural selection
directional selection
When does the bottleneck effect occur?
occurs after an event greatly reduces the size of a population
occurs after a small number of individuals colonize a new area
occurs when a population grows in size
it never occurs
When does the founder effect occur?
occurs after an event greatly reduces the size of a population
occurs after a small number of individuals colonize a new area
occurs when a population grows in size
it never occurs
What is sexual selection?
occurs during a bottleneck event
occurs during meiosis
occurs when a specific trait aids in a population's survival
occurs when certain traits increase mating success
What is gene flow?
movement of alleles from one population to another
event that reduces population size
event that decreases genetic diversity
occurs when populations remain separate
What is the Hardy-Weinberg equilibrium model?
describes a population that is evolving
describes a population whose allele frequencies are changing
describes a population whose allele frequencies remain constant
describes a population whose genotype frequencies are changing
What are the three types of reproductive isolation?
geographic, behavioral, & temporal
geographic, physical, & temperature
behavioral, temporal, & physical
geographic, behavioral, & temperature
What is coevolution?
process in which two or more species evolve in response to changes in each other
closely related species evolve in different directions, they become increasingly different
evolution toward similar characteristics in unrelated species
the observable change in which allele frequencies of a population over time
What five conditions lead to evolution?
genetic drift, gene flow, mutation, natural selection, sexual selection
genetic drift, isolation, mutation, natural selection, sexual selection
genetic drift, gene flow, mutation, isolation, equilibrium
genetic drift, gene flow, mutation, natural selection, equilibrium
What happens if a population is unable to adapt to its environment?
natural selection
extinction
sexual selection
gene flow
