Cartwright has gone further than what is already (i)____________ – that the expression of genes is dependent on social context. By introducing a relatively docile species of bee into the colony of a far more aggressive species, he effected a change not even thought to be (ii)____________ for the species, given its genotype: the docile bee, after six months in the hive, had become (iii)____________. A. well known B. possible C. virtually extinct D. under investigation E. healthy F. unnecessarily specialized G. far afield H. necessary I. highly combative