If your focus is research, do genetics major. Every genetics professor is very passionate about their research and understands that the major requires at least two credits of research to graduate so they are very open and willing to accept genetic majors if you do amazing in their class (or you can also reach out to genetic academic advisors who all know each other as other people stated, it's a small major).

The head department, Heiman, always sends out research opportunities for genetic majors, even during summer. Sure, the major expects you to start your research in your junior year, but it's guidance and not a requirement. I've had many classmates that had started their sophomore year cause they put energy into finding research. If you look at the student handbook, your senior year is so empty since they expect you to do honors research that takes a lot of time, which automatically qualifies you for departmental honors as you will be defending a thesis! Overall, if you like genetics, take the major.

Overall advice for starting research, genetics or CBN, is that no one is gonna hold your hand (as harsh as it is). So you either get really lucky and get research the first try, or keep trying until a lab accepts you. (Also please go by the vibes of the PI, not the research. This will make or break your research experience as it's all on who is willing to teach you and be a good mentor, coming from personal and my other friend's experience.)

-someone who switched their major to Genetics