Table 52.—F₁ offspring of the original mutant male, 4763, +5½, mated with females of the minus series.

Grade of mother. Grade of offspring, lower group. Grade of offspring, upper group.
-1 ¾ ½ ¼ 0 +¼ +½ +¾ +1 +1¼ +1½ +1¾ +2¼ Totals. Means. Standard deviation. +4 +4¼ +4½ +4¾ +5 Totals. Means. Standard deviation.
-2 1 1 1 3 1 2 1 1 1 1 13 +.40 2 5 3 2 12 4.46
-2¼ 1 1 1 2 2 2 3 1 1 14 +.70 2 4 3 9 4.53
-2½ 2 1 1 4 +.31 2 3 1 6 4.21
-2¾ 1 1 2 4 +.18 2 1 1 4 4.19
Totals or means 2 1 1 2 7 3 5 4 2 3 2 2 1 35 +.49 .77 6 11 6 6 2 31 4.43 .31

Table 53.—Classification of the descendants through three generations of the two original mutants, ♂ 4763, +5½, and ♀ 5153, +5¾. The parents are in every case of grade 5½ or 5¾.

Generation. Grade of offspring.
Lower group. Upper group.
3¼ 3½ 3¾ 4 Totals. Means. Standard deviation. 5 5¼ 5½ 5¾ Totals. Means. Standard deviation.
F₁ 3 3 6 3.87 6 4 10 5.60
F₂ 1 1 2 3.37 2 3 15 10 30 5.52
F₃ 1 7 3 11 5.55
Totals or means 1 1 3 3 8 3.75 .25 2 4 28 17 51 5.54 .19

Table 54.—F₂ descendants of the original mutant male, 4763, +5½, mated with females of the plus series. (Compare Table 51.)

Grade of (F₁) parents. Grade of (F₂) offspring.
Lower group. Upper group.
3 3¼ 3½ 3¾ 4 4¼ 4½ Totals. Means. Standard deviation. 5 5¼ 5½ 5¾ Totals. Means. Standard deviation.
Lower group parents 3⅝ 2 1 10 8 1 22 3.56
3¾ 1 2 2 7 2 1 15 3.92
3⅞ 1 2 6 8 4 1 22 3.92
Totals or means 2 3 14 16 16 6 2 59 3.78 .33
Upper group parents 5¼ 1 1 3.50 2 2 5.50
5⅜ 1 1 3 1 4 10 3.90 2 6 49 13 70 5.51
5⅝ 2 5 7 5.43
Totals or means 1 2 3 1 4 11 3.86 .35 2 8 56 13 79 5.50 .15

Table 55.—F₂ descendants of the original mutant male, 4763, +5½, mated with females of the minus series. (Compare Table 52.)

Grade of F₁ parents. Grade of (F₂) offspring, lower group parents. Totals. Means. Standard deviation.
-2 -1¾ -1 ¾ ½ ¼ 0 +¼ +½ +¾ 1 1¼ 1½ 1¾ 2 2¼ 2½ 3¼
¾ 1 1 1 3 .58
⅝ 1 1 1 3 1 1 2 1 11 .57
⅛ 1 1 1 1 1 2 1 1 9 .80
0 1 3 3 3 1 4 1 1 3 2 22 .72
+¼ 1 1 1 3 1.00
+½ 1 1 1 1 4 -.12
+1 1 1 1 1 1 1 2 1 9 .19
Totals or means 2 1 4 1 6 4 9 1 2 2 9 4 4 2 5 1 3 1 61 .58 1.17
Grade of F₁ parents. Grade of (F₂) offspring, upper group parents. Totals. Means. Standard deviation.
-2 -1¾ -1 ¾ ½ ¼ 0 +¼ ½ ¾ 1 1¼ 1½ 1¾ 2 3½ 4 4¼ 4½ 4¾ 5 5¼ 5½ L[1] U[2] L[1] U[2] L[1] U[2]
4⅛ 1 2 1 1 1 1 1 3 5 4.85
4¼ 1 1 6 1 1 1 1 10 4.62
4⅜ 1 1 2 1 1 2 4 4.56
4½ 1 2 2 1 1 2 4 10 6 8 4 6 6 41 4.78
4⅝ 1 1 1 1 1 2 3 2 8 4.91
Totals or means 1 1 2 4 2 1 3 1 2 9 18 10 12 9 7 14 68 +.75 4.77 1.03 .44

[1] Lower group offspring, -1¾ to +2 inclusive.

[2] Upper group offspring, +3½ to +5½ inclusive.