18 Questions
What is the term for when an allele frequency reaches 100% in a population?
Fixation
What is the main difference between genetic drift and natural selection?
Genetic drift does not consider the benefits of an allele, while natural selection does
What is the term for the reduction in genetic diversity that occurs when a population is severely reduced in size?
Bottleneck effect
What is the result of a population experiencing a bottleneck effect?
A decrease in genetic diversity
What is the term for when a small group of individuals becomes isolated from a larger population and establishes a new population?
Founder effect
What is the effect of a small population size on the rate of genetic drift?
It increases the rate of genetic drift
What is the primary difference between the founder effect and the bottleneck effect?
The mechanism of colonization vs. catastrophe
What is the outcome of genetic drift in a population?
Random change in allele frequencies
What occurs when a small group of individuals breaks off from a larger population to establish a colony?
The founder effect
What is the result of genetic drift on a population's genetic diversity?
Decreased diversity
What is the term for the loss of genetic variation in a population due to a severe reduction in population size?
Bottleneck effect
What is the primary mechanism by which natural selection acts on a population?
Variation in traits and fitness
Which of the following is an example of the founder effect?
A small group of individuals establishing a new population
What is the difference between genetic drift and natural selection?
Genetic drift is random, while natural selection is non-random
What is the key difference between genetic drift and natural selection?
Genetic drift is random, while natural selection is directional
How does genetic drift affect genetic diversity in a population?
It decreases genetic diversity
What is the result of a bottleneck effect on a population's genetic diversity?
Decreased genetic diversity
What is the term for the phenomenon where a single allele becomes fixed in a population?
Fixation
Learn about the effects of genetic drift on population genetics, including the loss of alleles and fixation. Discover how population size influences these processes.
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