So it turns out that aliens are doing their best to understand what humanity is up to and what human beings are. That is not easy to figure out, even for humans. That is also true for the whole gender thing, which is why the extraterrestrial scientists decide to mix things up a bit.
Adam and Eve (and yes, those are truly their names) are in for a bumpy journey, indeed!
Note that this comic is also in response to requests for FTM transformations.