I. You are investigating the evolution of leaf size in a plant
species. You grow a population of 200 plants in a controlled
greenhouse and measure the length of their leaves. The mean leaf
length of the entire population is 8 cm. You choose ten plants with
the longest leaves. Mean leaf length in that selected group is 8.8
cm. You breed these 10 plants to each other to produce generation
2. You raise 200 plants of generation 2, measure their leaves, and
find that the mean leaf length of generation 2 is 8.6 cm.
Estimate the realized heritability of the leaf length trait in
this population.
State in words what this value of heritability
indicates.