Water Fleas, Daphnia Magna, Can Switch Between Asexual and Sexual

question 34

Multiple Choice

Water fleas, Daphnia magna, can switch between asexual and sexual reproduction cycles. Which of the following observations support the hypothesis that sex is favored in unpredictable environments?

• A) The introduction of predators triggers sexual reproduction.
• B) D. magna reproduces asexually every other generation in a variety of habitats.
• C) D. magna reproduces sexually when in stable water conditions.
• D) Asexual D. magna strains outcompete introduced competitors.

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