Two Different Pure-Breeding Lines of Tobacco Were Crossed and Their

Multiple Choice

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.