It's funny, I fell in love with genetics in high school, but fell out of love with biology a bit in college. I remember calling my mom in tears, freaking out about my 'crazy' decision to major in math instead of biology- I really looked at it as completely divorced from genetics. At the time, I only understood genetics to be a bench science (think test tubes, and beakers), it never occurred to me that I could do both. Yet my math classes were really satisfying in three ways 1) I felt like I was getting to sit around and solve puzzles all day 2) when you prove something in math, it's finished, there's closure, a beautiful contentedness that you never really get in biology 3) it was so incredibly hard for me and the challenge of it just baited me on. It wasn't until I got to graduate school and studied computational/statistical genetics with Dr. Nancy Cox that I suddenly realized that I could apply math in genetics... that was it for me. I had found my passion.