When corn plants are too tall, they lodge (topple over) prior to harvest. This is bad since the grain is often lost when it cannot be picked up off of the ground by mechanical harvesters. You have a high-yielding strain of corn, but the plants often lodge. You want to estimate broad-sense heritability for % lodging in corn. You start by mating two inbred lines to produce an F1 generation. The F1 was allowed to intermate to produce an F2 generation. The variances for each generation are given below: Variance of inbred line 1 = 311
Variance of inbred line 2 = 333
Variance of F1 = 316
Variance of F2 = 1153
1. What is the phenotypic variance?
2. What is the environmental variance?
3. What is the genetic variance?
4. What is the broad-sense heritability?