In this same population of elephants, the offspring of 4 other breeding pairs were orphaned when poachers killed their parents. The parents’ tusks were recovered and the offspring were ‘adopted’ by other families in the same population shortly after birth. You take measurements of the (dead) parents and of the offspring after they are mature, and calculate that h^2 for tusk length is 0.1.
Assume both studies have measured animals that are representative of the population. Give a reasonable explanation for why the h^2 values calculated in the two studies differ even though they are taken from the same population.