Varying the answer I give to question #3 of the Gene Guess test varies whether the it guesses that I am male or female. Clicking on either one of the right 2 circles (the ones adjacent to the man wearing the towel) results in the machine guessing I'm male. Clicking on either one of the left 2 circles (the ones adjacent to the women in the low-cut dress) results in the machine guessing I'm female.

I attribute the test's prior failure at guessing my sex to how poorly worded the question text is for item #3. It states "You are answering question three of geneguess.com and soon you will have the answer. Look at the black balls below which have very subtle differences. Click on th ball which appeals to you most. Don't click on th images!"

The question makes absolutely no sense. What criterion am I supposed to use to gauge "black ball appeal". There are four slightly ovoid circles, none of which I am particularly interested in. My first time through I just chose the most ovoid one and the second time through I chose the least ovoid one. Neither of those answers apply to the question though because a) it's nonsense to begin with and b) I am utterly indifferent towards the balls. So, who knows. Incidentally, if you do click on one of the pictures, you are taken to the same page, except that now the pictures of the man and woman are not hyperlinks anymore and regardless of which black ball I choose, the test guesses I'm female (presumably because woman are the only ones who would fail to follow explicitly worded instructions).

It seems to be largely horseshit, as far as I can tell from my limited testing.