It won't be a big issue... I did sometimes typo error in my name as well..
Or straightaway go as if you don't know about your mistake.. and see if TTE tells anything, jut tell..oh.. I don't know how it happened, may be while booking in speed the mouse got clicked on the next option..
Only problem in gender is in case of RAC, the system may assign you automatically with someone of same gender, as you mentioned.