Most EAs studies math, CS, economics or philosophy in their college. Due to the expectation of AI development, CS seem to be the most popular major for EAs. Some argue that biology major is worse than CS. There are lots of biological cause areas which EA can work in: impactful medicine, mental health, biotech(like transhumanism), wild animal welfare, cultured meat, sentience, brain computer interface... But some still agrues that biology major isn't good enough because:(1)Biology is narrower than CS, CS can be used in any subjects(2)Biology is easier(3)Biology is too broad, you only need to know some expertise for your cause area(4)People in math or CS can easily go in these researches, only needing a few biology self-learnings to make themselves speciailized. I'm not very sure if (2)-(4) are right. I can't imagine the biology professionalism can be replaced that easily. I think CS engineers can cooperate with biologists, like bioinformatics. But biology research professors requires a lot of knowledge of biology in your major. If I want to do these bio research topics, are there other reasons that makes biology a useless major? Do any biologists in EA against that biology is more useless ?
You may be interested in this 2021 WSJ article: "A Technology Race to Stop the Mass Killing of Baby Chicks: An estimated six billion newly hatched male chicks are killed world-wide each year. New technologies are being developed to stop that."
I know George Church is a big name in bio/genetics who seems to have interests in transhumanism.
Another WSJ article just weeks ago: "Scientists at DeepMind and Meta Press Fusion of AI, Biology".
I would think bio is a great thing to go into! However, I'd guess your point (4) has significant truth to it. If you do bio, I'd make sure you still learn your math! Math is the language of science. I think there are a lot of people that major in bio and get a kind of "soft" pre-med style bio education which is mostly memorizing stuff. I would see if you can do like a computational bio major or double major with math, applied-math, stats, or CS. I'd try to take several courses in probability/statistics/machine learning.
If that article is paywalled, try this: https://drive.google.com/file/d/1shcLzlS8qf7ODbqMqiHtwRzFminRpiC3/view