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Evolutionary shifts in olfactory sensitivities in fruit flies

findings indicate that the relative overexpression of MeHex-specific receptor neurons in D. sechellia compared to D. melanogaster has occurred at the expense of two other types of sensilla.

The work suggests that the evolution of a specialized olfactory system can occur during a limited evolutionary time span, and at several different levels of neural organization. More broadly speaking, the findings contribute to our understanding of the evolution of sensory systems and their adaptation to new conditions and resources.


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Source:Cell Press


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