I believe the answer is: Operant conditioning
In operant conditioning, the behavior of the subject would be controlled/influenced by either reward or punishment.
On the scenario above, amy's behaving the way she does because she's expecting the reward from her grandfather (by tickling her)
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Answer: 240 million
Suppose the mutation rate per nucleotide in a type of fly is about 10 in a billion, that there are 300 million nucleotides in the haploid genome, and that the population size is 40 million. In this case, in every generation about <u>240 million</u> new mutations will appear in each individual on average.