Drosophila melanogaster 6 Hexapoda 6 Olfactory behavior article 6 controlled study 6 nonhuman 6 olfactory system 6 smelling 6 Adaptation 4 Drosophila 4 Drosophila ananassae 4 Drosophila erecta 4 Drosophila melanogaster species group 4 Drosophila sechellia 4 Drosophila simulans 4 Drosophila yakuba 4 Evolutionary genomics 4 Insects 4 arthropod life cycle stage 4 drosophila erecta 4 evolutionary rate 4 gene sequence 4 insect genetics 4 insect genome 4 molecular evolution 4 Animals 2 DNA Mutational Analysis 2 Development 2 Gene Expression Profiling 2 Gene Expression Regulation, Developmental 2