+------+----+--------------------------------+--------------------------------+-------------------------------------------------+ |Serial| Pen| Mother. | Father. | Grade of openness in offspring. | | No. | No.+-----+----+--------------+------+-----+----+--------------+------+----+----+----+----+----+----+----+----+----+----+ | | | No.|Gen.| Races. |Grade.| No.|Gen.| Races. |Grade.| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | +------+----+-----+----+--------------+------+-----+----+--------------+------+----+----+----+----+----+----+----+----+----+----+ | 121 | 728| 174| F1 | Houd. × Legh.| 1 | 1258| P. | Brah. × Tosa.| 2 | 2 | 7 | 2 | 1 | 1 | 1 | 1 | .. | .. | .. | | 122 | 728| 912| F2 | Do. | 2 | 258| F1 | Houd. × Legh.| 2 | 7 | 3 | 3 | 2 | 1 | .. | .. | .. | .. | .. | | 123 | 763| 3799| F1 | Min. × Houd. | 6 | 2247| F2 | Do. | 2 | .. | 2 | 2 | 2 | 2 | .. | 1 | .. | 2 | .. | | 124 | 802| 509| F2 | Polish × Min.| 1 | 6652| F1 | Polish × Min | 4 | 6 | 6 | 1 | .. | 1 | .. | .. | .. | .. | .. | | 125 | 802| 3846| F2 | Do. | 2 | 6652| F1 | Do. | 4 | 1 | 6 | 3 | 1 | 1 | .. | .. | .. | .. | .. | | 126 | 802| 5025| F3 | Do. | 2 | 6652| F1 | Do. | 4 | 8 | 10 | 4 | 3 | 2 | .. | .. | .. | .. | .. | | 127 | 802| 5087| F3 | Do. | 2 | 6652| F1 | Do. | 4 | 7 | 9 | 12 | 2 | .. | 1 | .. | .. | .. | 1 | | | | | | +----+----+----+----+----+----+----+----+----+----+ | | | | | Totals (217) | 31 | 43 | 27 | 11 | 8 | 2 | 2 | 0 | 2 | 1 | | | | | | Percentages |24.4|33.9|21.3| 8.7| 6.3| 1.6| 1.6| 0| 1.6| 0.8| +------+----+-----+----+------------------------------------------------------+----+----+----+----+----+----+----+----+----+----+ TABLE 54.--_Distribution of frequency of grades of "openness" in offspring when both parents are extracted recessives (extracted RR × RR)._