Of course, some buildings were easier to figure out than others. Such was the case when I happened upon an old church along the side of a highway while driving cross-country for my brother's wedding, where I was to be the best man.

Well we found a gene that seems to code for the genitalia case closed. We have found in most cases those we choose to identify as female have XX chromosomes and those we choose to identify as male have XY chromosomes, case further closed.