In an Experiment,Jokela and Colleagues Reared 14 Replicate Populations of a Snail

question 32

Multiple Choice

In an experiment,Jokela and colleagues reared 14 replicate populations of a snail species that is polymorphic for sexual/asexual reproduction under controlled,identical conditions in the lab.Each population started with 35% asexual and 65% sexual individuals.The figure below shows the percent of asexual individuals after a year-long experimental run.Which of the following statements is a possible explanation for these results?

• A)Asexual females survived better under the experimental conditions.
• B)Asexual females produced more offspring per individual than sexual females.
• C)Avoiding the cost of males allows faster population growth for the asexual subpopulation.
• D)A novel mutation after the start of the experiment led to the increased survival of the asexual line with the mutations.
• E)A, B, and C

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