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WorksheetsGenetic Drift vs Gene Flow Lesson
Total questions: 15
Worksheet time: 15mins
gene flow
natural selection
bottleneck effect
founder effect
A bee carrying pollen from one flower population to another flower population.
gene flow
natural selection
bottleneck effect
founder effect
Which of the following statements about gene flow is TRUE?
Gene flow is a result of individuals that breed in an old location
Gene flow is a result of migrating individuals that breed in a new location
Gene flow is not a result of migrating individuals that breed in a new location
None of the statements are true
How do evolution directly affected by the gene flow?
It doesn’t contribute to evolution
It introduces new alleles into a population.
It reduces the number of members in a population.
It changes the environment in which a population resides.
In order for the genetic drift to occur, what is the necessary parameter?
The population must be large.
The population must be small.
The population must be under environmental stress.
The population must be sterile.
Someone steps on some bugs and randomly removes their alleles from the population. This is an example of
gene flow
genetic drift
speciation
allele frequency
The allele frequencies of the mouse population in the picture are changing over time. Which is true?
The population is evolving.
The population is not evolving.
The population will go extinct.
The population's genetic variation is increasing.
Which of the following best describes genetic drift?
A random change in allele frequencies in a population
The movement of alleles between populations
The adaptation of organisms to their environment
The selective breeding of organisms
What is a key difference between genetic drift and gene flow?
Genetic drift involves random changes, while gene flow involves migration
Genetic drift requires large populations, while gene flow requires small populations
Genetic drift increases genetic variation, while gene flow decreases it
Genetic drift is a result of natural selection, while gene flow is not
In a small population of rabbits, a sudden flood randomly kills a large portion of the population. This is an example of:
Gene flow
Genetic drift
Natural selection
Mutation
Which of the following scenarios is an example of gene flow?
A bird carrying seeds to a new location
A mutation occurring in a DNA sequence
A population bottleneck reducing genetic diversity
A predator-prey relationship affecting survival
How does genetic drift affect genetic variation within a population?
It increases genetic variation
It decreases genetic variation
It has no effect on genetic variation
It stabilizes genetic variation
Which of the following is a potential consequence of genetic drift in small populations?
Increased genetic diversity
Loss of genetic diversity
Increased population size
Stabilized allele frequencies
Gene flow can counteract the effects of genetic drift by:
Increasing genetic variation through new alleles
Decreasing population size
Stabilizing environmental conditions
Increasing the rate of mutation
In a study of two isolated populations of fish, researchers observe that one population has developed a unique coloration pattern. This is likely due to:
Gene flow
Genetic drift
Natural selection
Artificial selection
