0 491 Y 50  9  6 ... 765 1790 I  0 1794 Y 90 17 25 ... 802 3846 I  0 6652 Y 90  8  5 ... 5025 I  0 6652 Y 90 14 11  2 5087 I  0 6652 Y 90 13 17  2 812 4254 I  0 4118 Y 90 15 13 ... 5540 I  0 4118 Y 90  8  9 ... Totals (189) 95 95  4 Percentages  49.0   49.0   2.0 

The mating of extracted I comb and Y comb, both of the second (or later) hybrid generation, gives the following distribution of types in the offspring (table 6): Y comb 95 (49 per cent); I comb 95 (49 per cent); oo comb 4 (2 per cent). In detail the results given in table 6 accord badly with the second hypothesis, which demands some families with 100 per cent Y comb.

The mating of extracted oo comb×Y comb, where both parents are of the second hybrid generation, gave the distribution of comb types in the 6 families that are recorded in table 7.