Final answer:
The result of no change in symbiodinium motility upon inhibition of the gPCR pathway with SQ536 may imply that the gPCR pathway is not involved in the motility of these organisms. Alternative explanations such as ineffective inhibition or experimental errors should also be considered before drawing a final conclusion.
Step-by-step explanation:
If a research assistant (RA) used SQ536 to inhibit the gPCR pathway to determine its involvement in symbiodinium motility, and found no significant change from the control, it suggests that the gPCR pathway may not be involved in symbiodinium motility. This conclusion is based on the assumption that SQ536 effectively inhibited the pathway and that the experimental setup was correct. If the inhibition of the pathway did not affect motility, this could imply that the pathway is not necessary for motility, or other pathways can compensate.
However, alternative explanations should be considered. These include the possibility that SQ536 did not effectively inhibit the gPCR pathway, or that the experiment had technical issues. Thus, it would be prudent for the researcher to verify the effectiveness of the SQ536 inhibitor in this specific system and check for any potential errors in the experimental setup before drawing a final conclusion about the role of the gPCR pathway in symbiodinium motility.