Question

Male Drosophila become sterile in warm environments. Rohmer et al. (2004) asked whether flies from warmer geographical regions could be adapted to heat. They collected flies from a relatively cool area of France and a warm area in India to test the effects of population of origin on sterility at a high temperature (30.5C). The data can be downloaded from the course website as ""Droso_sterility.csv"".

3. Make a contingency table of the data and visualize the data in a plot. Include both the contingency table and the plot in your report.

Answer 1

The student's question involves analyzing experiment data on fruit fly sterility at high temperatures by creating a contingency table and a plot. They touch on findings that relate to the trade-offs between environmental adaptation and reproductive success.

Step-by-step explanation:

The question pertains to an experiment testing whether fruit flies from different geographical regions display variations in sterility at high temperatures. A contingency table and plot are requested to analyze the data collected from flies in a cool area of France and a warm area in India. Fruit flies that are resistant to cold are known to have decreased fecundity at early ages, possibly due to the trade-off between survival in cold conditions and reproduction. Similarly, mosquito populations are affected by temperature and humidity, with high temperatures and low humidity reducing viable offspring production by parous females. The experiment you mentioned involving Drosophila melanogaster studied the effects of selection on DDT resistance on fecundity, indicating genetic selection for resistance or susceptibility may involve a trade-off with reduced rates of egg production.