You study a population that is polymorphic for sexual/asexual reproduction. A sexually transmitted disease has just decimated most of the sexually reproducing individuals
When you expose samples of asexuals and sexuals from this population to harsh envi-ronmental conditions in the lab, you discover, to your surprise, that the sexuals were worse at adapting to the new environment than the asexuals. (Note that your lab pop-ulation is free from the sexually transmitted disease.) What are likely explanations for your results?
a. All asexually reproducing strains independently acquired the same benefi-cial mutation that offset the advantage of the sexuals.
b. The bottleneck caused by the disease resulted in the fixation of many alleles in the sexually reproducing population.
c. Asexuals are favored under harsh environmental conditions.
d. There is no surprise here; this is what standard evolutionary theory pre-dicts.
e. B and C.
B
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