The -10% fitness experiment results for reference: 7. (1 pt.) A question about t
ID: 3165718 • Letter: T
Question
The -10% fitness experiment results for reference: 7. (1 pt.) A question about the experiments in Q4, 5, and 6. An interesting feature of the simulations with a-10% fitness reduction for new mutations is that the rate is (for most of you) not zero. So drift is still operating even though the new mutations are selected against. Before answering this question, you might want to count the number of virions in the simulation. The reason for the non-zero rate is A. the simulation software has been hacked. B. genetic drift can override natural selection if populations are small enough C. natural selection is erratic in its action D. natural selection against new mutations has altered the mutation rate E. linkage disequilibrium is not accounted for in the simulation.Explanation / Answer
Answer: Choice B
Explanation: The universally followed guidelines for generation of new phenotype or establishment of novel mutation in a given set of population is based upon the assumption that the population is large enough to obtain statistically significant quantitative data. In case the population size is not large enough, it is highly likely that modulators of evolution such as natural selection/genetic drift etc might get affected and the overall extent of mutation is subsided due to small number of individuals selected in the study. Hence, the present scenario follows the same condition where the genetic drift, a mediator of mutational establishment in this case, is overrided since the population size is too low to be statistically signficant in nature.
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