The recessive mutations

A scientist identified two recessive mutations in zebrafish: one that causes round fins (r) and another that causes short fins (f). She crossed two fish whose genotype she is unsure about but believes are Rrff x rrFf and got the following offspring: Wild type Short fins – 212 73 Round and Round fins short fins 82 33 Perform a chi-square analysis for this cross to test the hypothesis that the genes assort independently. Calculate the chi-square value. Round to 2 decimal places.