Abstract

Observations of mating behaviour were made on ‘eastern’ and ‘western’ Drosophila athabasca and on flies of mixed genetic background. Duration of copulation in mixed combinations of D. athabasca is determined by the male. In F 1 males the source of X-chromosome, whether eastern or western, partly determined duration of copulation. However, durations of copulation of backcross males suggest autosomal influence, in that males derived from an eastern backcross demonstrate significantly shorter durations than males derived from a western backcross. In addition, durations of copulation from F 2 combinations exhibit greater variance than the F 1 and thereby represent evidence of F 2 segregation.

Full Text
Paper version not known

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call