Figure 10. Courtship defects in lov³⁸ and lov⁴⁷ males.

A - Directed courtship. Courtship indices for courtship directed towards the female. The courtship indices for lov^91Y in its original genetic background (91Y non-iso) and after isogenization of lov^91Y into the same w⁺ background (see text) as the other lov mutants (91Y) are shown. Comparison of these two indices demonstrates that the new genetic background suppresses courtship significantly. Courtship behavior for lov³⁸, lov⁴⁷ and lov⁶⁶ is therefore compared only to the lov^91Y iso line (91Y) to correct for this background suppression of courtship. Statistics as previously. ** = p<0.01 as compared to isogenized lov^91Y. B - Non-directed courtship. Courtship indices for elements of the courtship ritual performed while not pursuing the female. Statistics as previously. *** = p<0.001 as compared to Canton-S control. C - Locomotor activity for males alone in courtship chambers (see Material and Methods). Control - Canton-S, 91Y = lov^91Y, 38 = lov³⁸, 47 = lov⁴⁷, 66 = lov⁶⁶,+ = CyO chromosome, def - lov deficiency chromosome SB1. Statistics as previously. ** = p<0.01 as compared to Canton-S control. ^## = p<0.01 as compared to isogenized lov^91Y.