2023 Lab 1- Heredity

Now calculate if there is a significant difference between what you expected to see and what you calculated! Fill in tables: Monohybrid Phenotype Expected Observed (Observed- Expected) (Observed- Expected) 2 (Observed- Expected) 2 / Expected Purple 75 53 22 484 6.4 Yellow 25 43 -19 361 14.4 Chi-Squared= add up all the (O-E) 2 /E column on bottom  20.8 Don’t follow Mendel’s law, and don’t support the hypothesis. Dihybrid: Phenotype Expected Observed (Observed- Expected) (Observed- Expected) 2 (Observed- Expected) 2 / Expected Purple round 56.2 43 13.2 174.24 3.1 Purple wrinkle 18.7 27 -8.3 68.89 3.6 Yellow round 18.7 18 0.7 0.49 0.02 Yellow wrinkle 6.2 12 -5.8 33.64 5.4 Chi-Squared= add up all the (O-E) 2 /E column on bottom  12.12 Don’t follow Mendel’s law. What is Chi-Squared? (Read in manual on pages 7-9)