ANTA02H3 Lecture Notes - Lecture 5: Kcna3, Drosophila Melanogaster, Taste
Document Summary
Meranda fruit can be toxic; some species avoids them and some prefer them; some can detect them by smell but others cannot. D. sechellia has fewer or (olfactory receptors) and gr (gustatory receptors) genes than d. melanogaster; look at lecture slides. Gr is important for detection of octanoic acids. Obp56e decreases the avoidance of meranda fruits; loss of its function means that they avoid it. However the difference was only like 15% in avoidance. Your going to have to know these taste receptors. Mammals prefer sweet food; it is calorie dense. Knowing that a fruit is ripe tells us that there are possibly less toxins in it; like mangos that are not completely ripe taste bitterish and riped ones taste good and sweet. Different mice desired different amounts of saccharine ; some preferred someone didn"t. After crossing these mice, they found that the generation after were mostly tasters; this showed that its most likely dominant.
