An F2 count gives 2706 tall inflated, 930 tall constricted, 888 dwarf inflated and 300 dwarf constricted. Which ratio is that closest to?

1. Take the smallest class, 300 dwarf constricted, as one part. 2. Divide the largest class by it: 2706 divided by 300 is about 9.0. 3. Divide the second class: 930 divided by 300 is about 3.1. 4. Divide the third class: 888 divided by 300 is about 3.0. 5. The four classes are therefore close to 9 to 3 to 3 to 1. 6. That is exactly what a dihybrid self-cross predicts when both trait pairs assort independently. 7. A 12 to 3 to 1 pattern has only three classes, so it cannot describe these four counts. 8. A 1 to 1 to 1 to 1 result would need roughly 1206 plants in every class. _Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 12 "Mendel's Experiments and Heredity", section 12.3 Laws of Inheritance_