ABSTRACT
The first data set, shown in Table 5.1, arises from a study of the fecundity of the fruit fly Drosophila melanogaster. For 25 female flies from each of three strains, per diem fecundity (number of eggs laid per female per day for the first 14 days of life) was recorded. The genetic lines labeled RS and SS were selectively bred for resistance and for susceptibility to the pesticide, DDT, and the NS line is a nonselected control strain. In this
experiment, the effect of the factor “Genetic strain” on fecundity is of interest.
