In which of Studies 1 and 2 did some of the fruit flies live for more than 75 days, and what diet were those fruit flies fed?
Study 1; 05% SY medium
O Study 1; 15% SY medium
Study 2:05% SY medium
O Study 2; 15% SY medium

Study 2: 05% SY medium

Explanation:

The x axis on each graph shows the number of days that has elapsed while the y axis shows the percentage of fruit flies that are still alive. In the Study 1, we notice that all the fruit flies had died off by the 55th day.

In Study 2, we then see that some fruit flies lived past 75 days. Those were fruit flies which had been put in the tube that had only 5% SY medium which contains 5% sugar and 5% killed yeast.

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