Kate Bredbenner graduated with a BS in Molecular Genetics and a BA in Philosophy. She decided to go into genetics research and will be working towards her PhD at Rockefeller University in New York City.
I have some advice to give about applying to anything. Whether it is a PhD program or a summer internship, don't be afraid to send an email. The worst thing that can happen is that the professor you emailed doesn't get back to you, but most likely they will respond and like your initiative.
Another hint is to never sell yourself short. In any essay you have to write, be honest, but be honest in the best way. You know how grandmothers think that everything you do is so impressive and they tell all their friends? Write your essays from the point of view of your grandmother. You are a big deal and your accomplishments are real.
Finally, don't forget to ask for help. Ask your friends or your advisor or anyone whose opinion you trust to read your essays or give you interview advice. Do remember that even though you trust the people who are giving you advice, you should always be yourself. You want to make sure that wherever you end up is a place that picked you for who you are, otherwise you might not be happy.