Part 11

TABLE 42.—Classification of the extracted hooded individuals obtained in the second generation from a cross between hooded and wild rats.

+----------------+-----------------------------------------------------+ |Grade of hooded | Grade of extracted hooded grandchildren. | |grandparents. | | | +--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+ | |-2|-1¾|-1½|-1¼|-1|-¾|-½|-¼| 0|+¼| ½| ¾| 1|1¼|1½|1¾| 2| +----------------+--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+ |♀ -1⅞, | | | | | | | | | | | | | | | | | | | gen. 2½, | | | | | | | | | | | | | | | | | | | minus series | | | 2 | | 4| 6| 5| 6|13| 2| 1| 3| 4| 5| 3| 4| 2| |♀♀ -2, | | | | | | | | | | | | | | | | | | | gen. 6, | | | | | | | | | | | | | | | | | | | minus series | | 1 | 1 | 1 | 1| 2| 6| 6| 7| 2| 3| 6| 4| 2| 4| 1| | |♀♀ -2 | | | | | | | | | | | | | | | | | | | and -2¼, | | | | | | | | | | | | | | | | | | | gen. 10, | | | | | | | | | | | | | | | | | | | minus series | 1| 3 | 3 | 1 |10| 3| 9| 8|14| | 4| 7| 8| 1| 4| 3| 5| |♀♀ +3, | | | | | | | | | | | | | | | | | | | gen. 3, | | | | | | | | | | | | | | | | | | | plus series | | | | | | | | | | | | | | | | 1| 5| |♀♀ +3¼, | | | | | | | | | | | | | | | | | | | gen. 5 | | | | | | | | | | | | | | | | | | | and +3½, gen. | | | | | | | | | | | | | | | | | | | 6, plus series| | | | | | | | | | | | | | | 1| 2| 1| |♀ +4¼, | | | | | | | | | | | | | | | | | | | gen. 10, | | | | | | | | | | | | | | | | | | | plus series | | | | | | | | | | | | | | | | | 1| +----------------+--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+

+----------------+--------------------+----------------------------------+ | | |Total. | | | Grade of | |Mean. | | | extracted | | |Mean, uncrossed race. | |Grade of hooded | hooded | | | |Standard deviation.| |grandparents. | grandchildren. | | | | |Standard | | | | | | | | deviation, | | +--+--+--+--+--+--+--+ | | | | uncrossed | | |2¼|2½|2¾| 3|3¼|3½|3¾| | | | | race. | +----------------+--+--+--+--+--+--+--+--+-----+-----+-----+-------------+ |♀ -1⅞, | | | | | | | | | | | | | | gen. 2½, | | | | | | | | | | | | | | minus series | 1| | | | | 1| |62|+ .31|-1.20| .98| .49 | |♀♀ -2, | | | | | | | | | | | | | | gen. 6, | | | | | | | | | | | | | | minus series | | |1 | | | | |48|+ .25|-1.59| .97| .44 | |♀♀ -2 | | | | | | | | | | | | | | and -2¼, | | | | | | | | | | | | | | gen. 10, | | | | | | | | | | | | | | minus series | 2| 4| 1| | | | |91|+ .24|-2.05| 1.18| .24 | |♀♀ +3, | | | | | | | | | | | | | | gen. 3, | | | | | | | | | | | | | | plus series | 3| 2| 3| 4| 2| 1| |21|+2.56|+2.60| .50| .53 | |♀♀ +3¼, | | | | | | | | | | | | | | gen. 5 | | | | | | | | | | | | | | and +3½, gen. | | | | | | | | | | | | | | 6, plus series| 1| 1| 6| 9| 8| 8| 1|38|+2.97|+3.14| .52| .49 | |♀ +4¼, | | | | | | | | | | | | | | gen. 10, | | | | | | | | | | | | | | plus series | | | 3| 4| 2| 3| 3|16|+3.15|+3.84| .28| .36 | +----------------+--+--+--+--+--+--+--+--+-----+-----+-----+-------------+

TABLE 43.—Classification of the extracted hooded individuals obtained in the second generation from a cross between hooded and Irish rats.

+---------------+-----------------------------------------------------+ |Grade of hooded| Grade of extracted hooded grandchildren. | |grandparents. | | | +--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+ | |-2|-1¾|-1½|-1¼|-1|-¾|-½|-¼| 0|+¼|+½|+¾|+1|1¼|1½|1¾| 2| +---------------+--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+ |-1½, gen. 3½ | 1| 5 | 3 | 6 |12|26| 9| 9|10| 1| 3| 2| 2| 1| | | | |-1⅞, gen. 4 | | 6 | 3 | 4 | 5| 9|14| 8| 1| | 1| 1| 1| | | | | |+2, gen. 7½ | 6| 6 |12 |11 | 8| 3| 4| 4| 6| 1| 3| | | | | 1| 1| |+2¼, gen. 2 | | | | | 3| 4| 5| 4|16| 7|16|22|25|29|24|13|33| |+3, gen. 3 | | | | | 2| | | | 1| 1| 3| 3| 4| 2| 2| 1| 2| +---------------+--+---+---+---+--+--+--+--+--+--+--+--+--+--+--+--+--+

+---------------+-----------------+--------------------------------------+ | | |Total. | | | Grade of | |Mean. | | | extracted | | |Mean, same grade and | | | hooded | | | generation, uncrossed race.| |Grade of hooded| grandchildren. | | | |Standard deviation. | |grandparents. | | | | | |Standard | | | | | | | | deviation, | | +--+--+--+--+--+--+ | | | | uncrossed | | | 2|2¼|2½|2¾| 3|3¼| | | | | race. | +---------------+--+--+--+--+--+--+---+-----+-----+-----+----------------+ |-1½, gen. 3½ | | | | | | | 90|- .62|-1.31| .61| .48 | |-1⅞, gen. 4 | | | | | | | 53|- .73|-1.18| .60| .46 | |+2, gen. 7½ | 1| | | | | | 66|- .94|-1.75| .84| .35 | |+2¼, gen. 2 |33|14| 8| 8| 6| 3|239|+1.27|+1.80| .90| .75 | |+3, gen. 3 | 2| 1| 1| | | | 23|+ .95|+2.50| .87| .53 | +---------------+--+--+--+--+--+--+---+-----+-----+-----+----------------+

TABLE 44.—F₃ generation produced by extracted hooded rats (F₂ generation) derived from a cross of a hooded rat of the minus series with a wild rat. (See Table 42.)

+--------+-----------------------------------------------------+ | Grade | Grade of (F₃) offspring. | | of (F₂)+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |parents.|-1|-¾|-½|-¼| 0|+½| ¾| 1|1¼|1½|1¾| 2|2¼|2½|2¾| 3|3¼|3½| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | ¾ | 2| 1| 4| 3| 4| 1| 2| 1| | | | | | | | | 1| | | 2½ | | | | | 1| 1| 1| 3| 2| 2| 1| 5| 3| 6| 4| 3| 1| 1| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

+--------+-------+------+-----------+ | Grade | | | | | of (F₂)+Totals.|Means.|Regression.| |parents.| | | | +--------+-------+------+-----------+ | ¾ | 19 | + .04| .71 | | 2½ | 34 | +2.06| .44 | +--------+-------+------+-----------+

TABLE 45.—F₄ generation from minus series crossed with wild.

+--------+-----------------------------------------------+ | Grade | Grade of (F₄) offspring. | | of (F₃)+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |parents.|-¼| 0|+¼|+½| ¾| 1|1¼|1½|1¾| 2|2¼|2½|2¾| 3|3¼|3½| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ | 2¼ | 2| 1| | 1| 3| 6| 6| 9|16|25|14|10| 2| 1| | | | 2⅜ | | 2| 1| 1| 1| 6| 3| 8| 3| 9| | 4| 4| 1| 1| | | 2⅞ | 1| | | 2| | 1| 1| 1| 1| 1| | | | | | | | 3 | | | | 1| 1| 3| | 3| 5| 9| 5| 7| 3| 1| | 1| | 3⅛ | | | | | | | | 1| 1| 3| 1| 2| 5| 4| | 1| | +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ |Totals | | | | | | | | | | | | | | | | | | or | | | | | | | | | | | | | | | | | |means, | | | | | | | | | | | | | | | | | | 2.52| 3| 3| 1| 5| 5|16|10|22|26|47|20|23|14| 7| 1| 2| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

+--------+-------+------+-----------+ | Grade | | | | | of (F₃)|Totals.|Means.|Regression.| |parents.| | | | +--------+-------+------+-----------+ | 2¼ | 96 | 1.78 | .47 | | 2⅜ | 44 | 1.67 | .70 | | 2⅞ | 8 | .91 | 1.96 | | 3 | 39 | 2.02 | .98 | | 3⅛ | 18 | 2.82 | .30 | | +-------+------+-----------+ |Totals | | | | | or | | | | |means, | | | | | 2.52| 205 | 1.86 | .66 | +--------+-------+------+-----------+

TABLE 46.—F₅ generation from minus series crossed with wild.

+--------+--------------------------------------+------------------------+ | Grade | Grade of (F₅) offspring. |Totals. | | of (F₄)+--+--+--+--+--+--+--+--+--+--+--+--+--+ Means. | |parents.| 0|+½| ¾| 1|1¼|1½|1¾| 2|2¼|2½|2¾| 3|3¼| Regression.| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+-----------+ | 2 | 1| | 1| 3| 3| 2|12|15|10| 2| 3| 1| | 53 | | | | 2⅛ | | | | 1| | 1| 1| 4| 1| | 4| | 1| 13 | | | | 2¼ | | | | | | 1| 3| 4| 1| 2| 2| | | 13 | | | | 2⅜ | | | | | | | 1| 2| 3| 2| 4| 2| | 14 | | | | 2⅝ |1 | 1| 2| 1| | 2| | | | | | | | 7 | | | | 2⅞ | | | | | | | | 2| 1| 1| 1| | | 5 | | | | 3 | | | | 1| | | | 1| | 1| 7| 4| | 14 | | | | +--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+-----------+ |Totals | | | | | | | | | | | | | | | | | | or | | | | | | | | | | | | | | | | | |means, | | | | | | | | | | | | | | | | | | 2.27| 2| 1| 3| 6| 3| 6|17|28|16| 8|21| 7| 1| 119 | 2.06 | .21 | +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+-----------+

TABLE 47.—F₆ generation from minus series crossed with wild.

+--------+-----------------------------------------+---------------------+ | Grade | Grade of (F₆) offspring. |Totals. | | of (F₅)+--+--+--+--+--+--+--+--+--+--+--+--+--+--+ Means. | |parents.|+½| ¾| 1|1¼|1½|1¾| 2|2¼|2½|2¾| 3|3¼|3½|3¾| Regression.| +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+--------+ | 2⅜ | | 1| 1| 1| 4| 8|13| 4| 4| 7| 3| 2| | | 48 | 2.14 | .23 | | 2½ | | | | 3| 2| 2| 4| 3| 3| 5| 4| | | | 26 | 2.24 | .26 | | 2⅝ | 1| | 1| 1| 2| 1| 2| 3| | 3| 4| 1| 1| | 20 | 2.26 | .36 | | 2¾ | 1| | | 1| 4| 2| 5| | 3| 8| 2| 5| | | 31 | 2.35 | .40 | | 2⅞ | | | | | 1| | 4| 1| 9| 7|11| 5| 2| | 40 | 2.74 | .13 | | 3⅛ | | | | | | 1| 4| 2| 4| 7| 6| 2| 1| 2| 29 | 2.73 | .39 | +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+--------+ |Totals | | | | | | | | | | | | | | | | | | | or | | | | | | | | | | | | | | | | | | |means, | | | | | | | | | | | | | | | | | | | 2.69| 2| 1| 2| 6|13|14|32|13|23|37|30|15|4 | 2| 194 | 2.41 | .28 | +--------+--+--+--+--+--+--+--+--+--+--+--+--+--+--+-----+------+--------+

TABLE 48.—F₇ generation from minus series crossed with wild.

+--------+-----------------------------------+-------+------+-----------+ | Grade | Grade of (F₇) offspring. | | | | | of (F₆)+--+--+--+--+--+--+--+--+--+--+--+--+Totals.|Means.|Regression.| |parents.| ¾| 1|1½|1¾| 2|2¼|2½|2¾| 3|3¼|3½|3¾| | | | +--------+--+--+--+--+--+--+--+--+--+--+--+--+-------+------+-----------+ | 2⅝ | | | 4| 4|12| 2| 9| 9|12| 1| | | 53 | 2.41 | .21 | | 2¾ | 3| 1| | 2| 6| 5| 4| 4| 3| | | | 28 | 2.14 | .61 | | 2⅞ | | | 1| 1| 1| 2| 3| 1| | 1| | | 10 | 2.32 | .55 | | 3 | | | | | | 1| 3| 1| 3| 1| 3| | 12 | 2.93 | .07 | | 3⅛ | | 1| 3| 2| 3| 1| 4| 3| 5| 2| 2| 1| 27 | 2.59 | .53 | | 3¼ | | | | | 3| 1| 3| 3| 1| 3| | | 14 | 2.63 | .62 | | 3⅜ | | | | | 1| | 2| 2| 2| 2| 1| | 10 | 2.85 | .52 | +--------+--+--+--+--+--+--+--+--+--+--+--+--+-------+------+-----------+ |Totals | | | | | | | | | | | | | | | | | or | | | | | | | | | | | | | | | | |means, | | | | | | | | | | | | | | | | | 2.80| 3| 2| 8| 9|26|12|28|23|26|10| 6| 1| 154 | 2.46 | .34 | +--------+--+--+--+--+--+--+--+--+--+--+--+--+-------+------+-----------+

TABLE 49.—F₈ generation from minus series crossed with wild.

+--------+--------------------------+-------+------+-----------+ | Grade | Grade of (F₈) offspring. | | | | | of (F₇)+--+--+--+--+--+--+--+--+--+Totals.|Means.|Regression.| |parents.|1¾| 2|2¼|2½|2¾| 3|3¼|3½|3¾| | | | +--------+--+--+--+--+--+--+--+--+--+-------+------+-----------+ | 2¾ | | | | 1| | 1| | | | 2 | 2.75 | 0 | | 3 | 1| 1| 3| 5| 8| | 5| | 1| 24 | 2.74 | .01 | | 3⅛ | 1| 2| 3| 3| 5| 3| 1| 1| | 19 | 2.60 | .52 | +--------+--+--+--+--+--+--+--+--+--+-------+------+-----------+ |Totals | | | | | | | | | | | | | | or | | | | | | | | | | | | | |means, | | | | | | | | | | | | | | 3.08| 2| 3| 6| 9|13| 4| 6| 1| 1| 45 | 2.67 | .41 | +--------+--+--+--+--+--+--+--+--+--+-------+------+-----------+

TABLE 50.—Results of crossing the selected plus with the selected minus series.

+----------------+-------------------------------------------------------+ | Grade | Grade of offspring. | | of +---+---+---+---+---+---+---+---+---+---+---+---+---+---+ |parents. | -2|-1¾|-1½|-1¼| -1| ¾| ½| ¼| 0| +¼| +½| +¾| +1|+1¼| +----------------+---+---+---+---+---+---+---+---+---+---+---+---+---+---+ |Series 1, F₁ | | | | | | | | | | | | | | | | generation; | | | | | | | | | | | | | | | | ♀♀ -2, | | | | | | | | | | | | | | | | gen. 6; | | | | | | | | | | | | | | | | ♂ ♂ +3½ | | | | | | | | | | | | | | | | or 3¾, gen. 5 | | 2| | 2| 1| 8| 10| 13| 25| 2| 8| 11| 6| 3| | | | | | | | | | | | | | | | | |Series 1, F₂ | | | | | | | | | | | | | | | | generation, -1| | 1| 1| | 4| | 1| 1| 3| 1| 1| | | | |½ | | | 1| 2| 1| 3| 3| 2| 1| | 1| | | 1| |0 | | | 1| | 1| 4| 2| 4| 6| 1| 1| 1| 3| 1| |+⅛ | | 1| 2| 1| 3| 3| 1| | 5| 1| 4| 3| 2| | |+¼ | | 2| 1| 2| 7| 3| 1| 2| 4| 1| 2| 2| 6| 1| |+½ | | | | 1| 1| 1| 4| 2| 4| | 1| 1| 1| | |+¾ | | | 1| | | 2| 3| 1| 2| 1| | 3| 2| 1| |+1 | | | 1| | | 7| 3| 6| 13| 4| 8| 5| 5| 4| |+1⅛ | | | | | | 1| 1| 1| 2| | 1| 3| | | |+1¼ | 1| | 1| 1| 5| | 7| 1| 8| 1| 5| 6| 4| 2| |+1½ | | | | | | | | | 1| | | | | | | +---+---+---+---+---+---+---+---+---+---+---+---+---+---+ |Series 1, totals| | | | | | | | | | | | | | | | or means, | | | | | | | | | | | | | | | | F₂ generation | 1| 4| 9| 7| 22| 24| 26| 20| 49| 10| 24| 24| 23| 10| | | | | | | | | | | | | | | | | |Series 2, F₁ | | | | | | | | | | | | | | | | generation; | | | | | | | | | | | | | | | | ♀ ♀ +3¾, gen. | | | | | | | | | | | | | | | | 10; ♂ -3¼, | | | | | | | | | | | | | | | | gen. 10 | | | | | | | | 1| | 1| 1| 2| 4| 2| | | | | | | | | | | | | | | | | |Series 2, F₂ | | | | | | | | | | | | | | | | generation, +½| | | | | | | | | | | 1| | 1| | |+⅝ | | | | | | | 2| 1| 3| 3| 3| | | | |+1 | | | | | | | | | 2| | | 2| 1| | |+1⅛ | | | | | | | 1| 1| 2| 1| 3| 4| 2| 1| |+1¼ | | | | | 2| | 1| 1| 1| 4| 5| 3| 2| 4| | +---+---+---+---+---+---+---+---+---+---+---+---+---+---+ |Series 2, totals| | | | | | | | | | | | | | | | or means, | | | | | | | | | | | | | | | | F₂ generation | | | | | 2| | 4| 3| 8| 8| 12| 9| 6| 5| +----------------+---+---+---+---+---+---+---+---+---+---+---+---+---+---+

+----------------+---------------------------+-------+------+----------+ | Grade | Grade of offspring. | | | | | of +---+---+---+---+---+---+---+Totals.|Means.|Standard | |parents. |+1½|+1¾| +2|+2¼|+2½|+2¾|+3½| | |deviation.| +----------------+---+---+---+---+---+---+---+-------+------+----------+ |Series 1, F₁ | | | | | | | | | | | | generation; | | | | | | | | | | | | ♀♀ -2, | | | | | | | | | | | | gen. 6; | | | | | | | | | | | | ♂ ♂ +3½ | | | | | | | | | | | | or 3¾, gen. 5 | 1| | | | | 1| | 93 |+ .06 | .71 | | | | | | | | | | | | | |Series 1, F₂ | | | | | | | | | | | | generation, -1| | | | | | | | 13 |- .57 | .66 | |½ | 1| | | | | | | 16 |- .37 | .80 | |0 | 2| 1| 1| | | | | 29 |+ .17 | .95 | |+⅛ | 3| 1| | | | | | 30 |+ .03 | .97 | |+¼ | 3| 3| 1| | | | | 41 |+ .10 | 1.08 | |+½ | | 1| | | 1| | | 18 |+ .06 | .91 | |+¾ | 1| | 1| | | | | 18 |+ .25 | .90 | |+1 | 4| 3| 2| 2| 6| | | 73 |+ .60 | .98 | |+1⅛ | 2| 1| 1| | | | | 13 |+ .61 | .83 | |+1¼ | 4| 3| 1| 3| | | | 53 |+ .38 | 1.02 | |+1½ | | | | | | | | 1 | 0 | | | +---+---+---+---+---+---+---+-------+------+----------+ |Series 1, totals| | | | | | | | | | | | or means, | | | | | | | | | | | | F₂ generation | 20| 13| 7| 5| 7| | | 305 |+ .24 | 1.01 | | | | | | | | | | | | | |Series 2, F₁ | | | | | | | | | | | | generation; | | | | | | | | | | | | ♀ ♀ +3¾, gen. | | | | | | | | | | | | 10; ♂ -3¼, | | | | | | | | | | | | gen. 10 | 1| 1| | 1| | | | 14 |+1.00 | .60 | | | | | | | | | | | | | |Series 2, F₂ | | | | | | | | | | | | generation, +½| | | | | 1| | | 3 |+1.31 | | |+⅝ | 1| | 1| 1| | 1| | 16 | +.40 | .96 | |+1 | 1| 1| | | | | | 7 | +.82 | | |+1⅛ | | 4| | 1| | 1| 1| 22 |+1.03 | .97 | |+1¼ | 1| | 1| | | | | 25 |+ .56 | .70 | | +---+---+---+---+---+---+---+-------+------+----------+ |Series 2, totals| | | | | | | | | | | | or means, | | | | | | | | | | | | F₂ generation | 3| 5| 2| 2| 1| 2| 1| 73 | +.72 | .87 | +----------------+---+---+---+---+---+---+---+-------+------+----------+

TABLE 51.—F₁ offspring of the original “mutant” male, 4763, +5½, mated with females of the plus series, and with the “mutant” female, 5153, +5¾.

+-----------------+-----------------------------------------------------+ | | Grade of offspring. | | +-----------------------------------------------------+ | Grade of | Lower group. | | mother. +---+---+---+---+---+---+---+-------+------+----------+ | | +3| 3¼| 3½| 3¾| 4| 4¼| 4½|Totals.|Means.|Standard | | | | | | | | | | | |deviation.| +-----------------+---+---+---+---+---+---+---+-------+------+----------+ | +3¾ | 1 | | 4 | 11| 1 | 1 | | 18 | 3.69 | | | 3⅞ | | | 3 | 7 | 3 | | | 13 | 3.75 | | | 4 | | 1 | 4 | 9 | 4 | 1 | 1 | 20 | 3.78 | | | 4⅛ | | | | 3 | 1 | 1 | | 5 | 3.90 | | | 4½ | | | 1 | 1 | | | | 2 | 3.62 | | | +---+---+---+---+---+---+---+-------+------+----------+ |Totals or means | 1 | 1 | 12| 31| 9 | 3 | 1 | 58 | 3.73 | .24 | | +---+---+---+---+---+---+---+-------+------+----------+ |Mutant ♀ | | | | | | | | | | | | 5153, +5¾ | | | | 3 | 3 | | | 6 | 3.87 | | +-----------------+---+---+---+---+---+---+---+-------+------+----------+

+-----------------+---------------------------------------------+ | | Grade of offspring. | | +---------------------------------------------+ | Grade of | Upper group. | | mother. +---+---+---+---+---+-------+------+----------+ | | 5| 5¼| 5½| 5¾| 6|Totals.|Means.|Standard | | | | | | | | | |deviation.| +-----------------+---+---+---+---+---+-------+------+----------+ | +3¾ | 1 | 3 | 9 | 4 | 1 | 18 | 5.51 | | | 3⅞ | 1 | 4 | 5 | 3 | | 13 | 5.44 | | | 4 | 2 | 7 | 5 | 4 | | 18 | 5.40 | | | 4⅛ | | 2 | 4 | 1 | | 7 | 5.46 | | | 4½ | | | | | | | | | | +---+---+---+---+---+-------+------+----------+ |Totals or means | 4 | 16| 23| 12| 1 | 56 | 5.45 | .23 | | +---+---+---+---+---+-------+------+----------+ |Mutant ♀ | | | | | | | | | | 5153, +5¾ | | | 6| 4| | 10 | 5.60 | | +-----------------+---+---+---+---+---+-------+------+----------+

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

+-------+----------------------------------------------------------------+ |Grade | Grade of offspring, lower group. | | of +--+--+--+--+--+--+--+--+--+---+---+---+---+---+------+----------+ |mother.|-1| ¾| ½| ¼| 0|+¼|+½|+¾|+1|+1¼|+1½|+1¾|+2¼|Totals. |Standard | | | | | | | | | | | | | | | | |Means.|deviation.| +-------+--+--+--+--+--+--+--+--+--+---+---+---+---+---+------+----------+ | -2 | 1| 1| 1| | 3| 1| 2| 1| | | 1 | 1 | 1 | 13| +.40 | | | -2¼ | 1| | | 1| 1| 2| | 2| 2| 3 | 1 | 1 | | 14| +.70 | | | -2½ | | | | | 2| | 1| 1| | | | | | 4| +.31 | | | -2¾ | | | | 1| 1| | 2| | | | | | | 4| +.18 | | | +--+--+--+--+--+--+--+--+--+---+---+---+---+---+------+----------+ |Totals | | | | | | | | | | | | | | | | | | or | | | | | | | | | | | | | | | | | |means | 2| 1| 1| 2| 7| 3| 5| 4| 2| 3 | 2 | 2 | 1 | 35| +.49 | .77 | +-------+--+--+--+--+--+--+--+--+--+---+---+---+---+---+------+----------+