Mary Katz, Louis Levine and Robert F. Rockwell


Six lines of the Drosophila melanogaster Oregon-R stock were established and each line was selected for either slow or fast larval movement through a system that consisted of single, double, or triple rings. Selection was successful in all three "slow lines" but not in any of the "fast lines". A test for movement of the adults from each of the six lines failed to reveal any correlated response. It is concluded that larval vagility in this stock is close to the maximum possible, and that there is no common genetic control over the tested types of movement in the two active stages of the organism's life cycle.

Carol Anne Diakow, Gail Elkin Barsel and Louis Levine