I need to select a statistical test in order to answer the question of whether the
TASR238 genotype is a good predictor of the ability to taste PTC (phenotype)
Here are the data I collected for my lab report:
PTC taster Genoty Strong Weak Non T/T 10 4 2 T/t 30 26 12 t/t 5 4 18
(also found here)
I think I have to use $\chi^2$, but would it be an $\chi^2$ test for differences? How do I calculate expected phenotype based on genotype, would it just be the total number of genotype?