Chapter 19, Problem 14P

In Nicotiana, two inbred strains produce long( ${\text{P}}_{\text{L}}$) and short( ${\text{P}}_{\text{S}}$)corollas. These lines are crossed to produce ${\text{F}}_{\text{1}}$, and the ${\text{F}}_{\text{1}}$ are crossed to produce ${\text{F}}_{\text{2}}$ plants in which corolla length and variance are measured. The following table summarizes mean and variance of corolla length in each generation. Calculate ${\text{H}}^{\text{2}}$ for corolla length in Nicotiana.