In a quantitative genetic study of cabbage, you take seed co

In a quantitative genetic study of cabbage, you take seed collected from many different populations and grow plants together in a field.The mean diameter of the cabbage heads was 18.8 cm.You select a set of the largest cabbages, with an average diameter of 26.2 cm, cross them, and plant the progeny in an adjacent field with identical conditions.The mean diameter of the progeny cabbages is 21.4 cm.Assuming the environments in which the parent and progeny plants were grown were identical, what is the response to selection?The narrow-sense heritability (h2) is: