I'd heard a while ago that the photic sneeze reflex was a so-called Mendelian trait which might actually be a "simple Mendelian trait". Having found so many other cases where such claims didn't pan out, I guess at this point I shouldn't be very surprised when another "simple Mendelian inheritance" story turns out to be complicated :-P
I only read the abstract of your linked study rather than methods and everything. Out of curiosity (if you read the whole thing), did they disentangle the causal factors behind variation in the trait? Like, did they distinguish between hypotheses such as "actual non-ACHOO-carriers can acquire the reflex based on life experience" vs "only carriers can acquire the trait, but penetrance increases with age, giving the potentially false appearance of people acquiring it based purely on environmental factors"?
I am trying to access the full article through my library system but it will take some time. It is worth noting that my goal is for light to make me sneeze, if and only if I already feel like sneezing. This is different from ACHOO syndrome as generally described; so I am unsure whether my technique uses the same biological mechanism.
EDIT: Until reading your post I had not considered the possibility that I may be a carrier who had not yet expressed this trait. I thought that I would be able to acquire it through conditioning regardless. Lack of a response f...
This is the fifth bimonthly What Are You Working On? thread. Previous threads are here. So here's the question:
What are you working on?
Here are some guidelines: