F₄ (seed) of wheat

(F₃ of crops)

Pure white

3 reds:1 white

15 reds:1 white

63 reds:1 white

constant red

S

Observed number of F₂ plants

0

8

15

5

50

78

Expected number of F₂ plants

1

6

12

8

37

64

Category of genecombination of F₂ plants

rrrrrr

rrrrrR

rrrRrR

rRrRrR

rrrrRR-RRRRRR