with all honesty organic chemistry was my downfall in undergrad, not even calculus I, and II were as bad as ochem -- sob7an Allah those who got it got it, but I wasn't one of them.. I had to drop it first time I took it and when I finally passed it, it was barely by the skin of my teeth, I was just so glad to have it behind me considering there were two courses of O.chem, and my happiness was short lived with one, on how I was to get by in the other..
my advise is to get a tutor early on, the first couple of chapters are deceptively simple but you can fall behind fast.. nothing on this thread pertains at all to O.chem.. maybe a few things on genetics, but undergrad is about understanding how things work together, graduate school is about their relevance to the real world, you can't get to one level without having completed the other as your knowledge base to build upon..
Now your experience might be completely different than mine -- I think if anything you should get out of this thread is to do at least just a little bit every day and not let it build up...genetics was fairly easy, it takes dedication so it is up to you.. the problem isn't with genetics it is with O.chem.. can you manage your time wisely or should you dedicate yourself to the difficult course get it behind you and take genetics later? only you are the best judge of your time and your ability..
and Allah swt knows best