he Problem: Bean beetles, Callosobruchus maculatus, get their lifetime nutrition from the bean seeds (family Fabaceae) on which their mother lays her eggs. The specific bean on which each egg is laid determines the future success of the larva that develops from that egg. Choosing where to lay an egg is the most important decision a female bean beetle will make for her offspring, yet even within one bean species the seeds available may be very different in quality. Seeds vary in size (even if from the same plant), so the amount of resource available to larvae on different beans will not be the same. Seed mass may vary by as much as 50% among mung beans purchased in a local store, a species on which Callosobruchus develops normally and may complete its lifecycle. Given the problem described above, what do you predict if the null hypothesis is true? If beans of various size are tested, then there will be no difference in larval success on beans of different sizes.
The Problem:
Bean beetles, Callosobruchus maculatus, get their lifetime nutrition from the bean seeds (family Fabaceae) on which their mother lays her eggs. The specific bean on which each egg is laid determines the future success of the larva that develops from that egg. Choosing where to lay an egg is the most important decision a female bean beetle will make for her offspring, yet even within one bean species the seeds available may be very different in quality. Seeds vary in size (even if from the same plant), so the amount of
Given the problem described above, what do you predict if the null hypothesis is true?
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If beans of various size are tested, then there will be no difference in larval success on beans of different sizes. |
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If beans of various size are tested, then larvae from smaller beans will be more successful. |
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If beetles lay eggs on larger beans, then those larvae will be more successful. |
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If beans of various size are tested, then larvae from larger beans will be more successful. |
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