Your friend is a diary farmer trying to increase milk production. Mean milk production in his herd is 80 L/week–but his best cows produce, on average, 120 L/week. If h2 is 0.25, What do you predict the mean milk production among offspring will be ________.
1) 80 L/week
2) 90 L/week
3) 100 L/week
4) 110 L/week
5) 120 L/week