128 GENETICS IN RELATION TO AGRICULTURE 
Taste XXVII.—Linxacr RELATIONS—CROSSING-OVER IN BotH SEXES 
| Gametic ratio | Phenotypic ratio per thousand 
p, | Percentage of | 
crossing-over | | 
AB:Ab:aB:ab | AB | Ab aB | ab 
| 
1 1:99.0:99.0:1 500.025 249.975 249.975 0.025 
2 1:49.0:49.0:1 500.100 | 249.900 249.900 0.100 
3 1: 2.3:1 500. 225 249.775 | 249.775 0.225 
4 1:24.0:24.0:1 500.400 | 249.600 249.600 | 0.400 
es 5 1:19.0:19.0:1 500.625 | 249.375 249.375 | 0.625 
3 6 1:15.7:15.7:1 500.900 249.100 249.100 | 0.900 
sh 7 1:13.3:13.3:1 501.225 248.775 | 248.775 1.225 
s 8 1:11.5:11.5:1 501.600 248.400 | 248.400 | 1.600 
z 9 1:10.1:10.1:1 502.025 247.975 247.975 2.025 
10 1: 9.0: 9.0:1 502.500 247.500 | 247 500 | 2.500 
20 1: 4.0: 4.0:1 510.000 240.000 240.000 10.000 
30 | 1: 2.3: 2.3:1 522.500 | 227.500 227.500 | 22.750 
40 | 1: 1.5: 1.5:1 540.000 | 210.000 210.000 40.000 
| 50 1:1 eral 562.500 | 187.500 | 187.500 | 62.500 
| 40 | 1.5:1:1: 1.5 590.000 | 160.000 | 160.000 | 
30 2.3:1:1: 2.3 622.500 127.500 127.500 
| 20 | _4.0:1:1: 4.0 660.000 | 90.000 | 90.000 - 
10 9.0:1:1: 9.0 702.500 47.500 47.500 
| 9 | 10.1:1:1:10.1 707.025 42.975 42.975 | 
S 8 | 11.5:1:1:11.5 711.600 38.400 38.400 
x 7 | 13.3:1:1:13.3 716.225 33.775 33.775 | 
| 6 | 15.7:1:1:15.7 720.900 | 29.100 29.100 | 220.900 
; 5 19.0:1:1:19.0 725.625 | 24.375 24.375 225.625 
4 | 24.0:1:1:24.0 730.400 19.600 19.600 | 230.400 
| 3 32.3:1:1:32.3 735.225 | 14.775 14.775 | 235.225 
| 2 | 49.0:1:1:49.0 740.100 | 9.900 9.900 | 240.100 
1 99.0:1:1:99.0 745.025 | 4.075 4.075 245.025 
Taste XXVIIL.—Linxacre Revations 
CROSSING-OVER ONLY 
Homozycgotr, Non-spx-LinKpep Factors 
IN THE SEX 
P. 
Ab xX aB | 
AB X ab or ab X AB 
Percentage of 
crossing-over | 
oR bo 
OonN 
Gametic ratio 
Phenotypic ratio per thousand 
AB: Ab:aB:ab | AB | Ab | ab 
ey are NR | 250 | 250 | 0 
| n n 
| | 
99.0:1:1:99.0 747.5 | Zio 20 247.5 
| 49.0:1:1:49.0 745.0 5.0 5.0 245.0 
$2.30 1212 3253 742.5 aed Tod 242.5 
24. 08121524.0 740.0 10.0 10.0 240.0 
| 19.0:1:1:19.0 Siero. T2i5 1225 237.5 
Wealtyedas lel Cains 735.0 T5220 152.0; 235.0 
a bes forts veel Gm Ket bes ears} 732.5 LASS 17.5 232.5 
ae aha ah a Up a 730.0 20.0 20.0 230.0 
| LOM 1081 W225 22RD 22.5 2215 
9.0:1:1: 9.0 1251.10 25.0 DU 225.0 
|) 408 Td 3)-4..0 700.0 50.0 50.0 200.0 
| POSS EA at ela 675.0 75,0 75.0 175.0 
ec Poo 650.0 100.0 100.0 150.0 
| 1 irl: i 625.0 | 125.0 | 125.0 | 125.0 
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