Flies expressing Or47aScer\UAS.T:Hsap\MYC under the control of Scer\GAL4Or22a.8197 in a Df(2L)dp-79b/Dp(2;2)dppd21 background (called Δhalo) show a slight increase in electrophysiological response to either 2-ethylpyrazine or 2-methylpyrazine.
When Or47aScer\UAS.T:Hsap\MYC is driven by Scer\GAL4Or22a.8197 in Df(2L)dp-79b/Dp(2;2)dppd21 (Δhalo) flies, mutant animals exhibit a strong response to exposure to ethyl acetate, pentyl acetate or 2-heptanone in the ab3A neuron. A strong response is not seen in response to exposure to ethyl butyrate, methyl salicylate, 1-hexanol, 1-octen-3-ol, E2-hexanal, 2,3-butanedione or geranyl acetate. When Or47bScer\UAS.T:Hsap\MYC is driven by Scer\GAL4Or83b.7.087 in the maxillary palp, the neurons in the palp acts to 1-hexanol and 1-octen-3-ol exposure in the way expected of to the neuron that normally expresses Or47a.