Two different pure-breeding lines of tobacco were crossed and their F1 showed a variance in flower length of 8.76.The total variance in flower length in the F2 was 40.96.The F1 and the F2 plants were bred,grown,and kept in identical environments.
a)What is the broad-sense heritability of flower length in tobacco in this experiment?
A)8.76% B)21.38% C)32.20% D)78.61% E)The broad-sense heritability cannot be calculated based on these data.