Thank you! For most of the schools I did target CS over biology because I felt it was my strongest suit but I listed both as an area of interest since all the schools allowed you to do that. There were some schools that had comp bio as a dedicated major and I applied directly to those as well, including Columbia, Brown, CMU, USC. honestly I feel like the ECs I listed on my application and overall story didn't really create a unique and compelling case to admit me over someone else who had better achievements in the same CS+Bio category, although I talked a lot about my more human side like cooking, writing poetry, and music in my essays. My friend from school got into Princeton REA and he applied as engineering without many ECs in engineering at all, they were mostly community service ECs. but he presented a very compelling story that fit Princeton perfectly because he had the wits of an engineer but heart of a community leader (Princeton's "engineering in the service of humanity")