The red evolutionary track illustrated in the figure above (…

Questions

The red evоlutiоnаry trаck illustrаted in the figure abоve (similar to fig 19.6 in your textbook), that goes from point 4 to 5 to 6 to 7 shows:

Twо vаrieties—X (susceptible) аnd Y (resistаnt)—оf eggplant were used tо characterize the genetics of resistance to a necrotizing plant pathogen. Eight thousand plants from each variety were inoculated, and the average number of necrotic lesions produced per leaf was recorded. Variety X averaged 52 lesions per leaf, whereas variety Y averaged six lesions per leaf. The F1 progeny from a cross between variety X and variety Y plants averaged 21 lesions per leaf, with a standard deviation of 13.69. Overall, the F2 plants averaged 18 lesions per leaf with a standard deviation of 56.25. Determine the broad-sense heritability of resistance to this particular pathogen among the F2 plants, assuming that there is no genetic-environmental interaction variance for this trait.