| Ho: The data sets represent the same phenotypic ratio. They are homogeneous, and the phenotypic proportions are independent of the data sets. |
| Phenotype | Student A | Student B | Total |
| Tall, Green | 370 | 180 | 550 |
| Tall, yellow | 130 | 50 | 180 |
| dwarf, Green | 110 | 63 | 173 |
| dwarf, yellow | 30 | 27 | 57 |
| Total | 640 | 320 | 960 |
| Phenotype | Student A (Exp Values) | Student B (Exp Values) |
| Tall, Green | 640 X (550/960) = 366.67 | 320 X (550/960) = 183.33 |
| Tall, yellow | 640 X (180/960) = 120.00 | 320 X (180/960) = 60.00 |
| dwarf, Green | 640 X (173/960) = 115.33 | 320 X (173/960) = 57.67 |
| dwarf, yellow | 640 X (57/960) = 38.00 | 320 X (57/960) = 19.00 |
Calculated chi-squared value = 8.38
Refer to Bio 211 Genetics Lab Instructions (Experiment 2)