Hey

To become an Evolutionary Biologists you need to have a very strong grasp on all Bio/Medical related concepts. Also you need to have a good research in your particular field. It depends upon you, what majors you wish to pursue, which interest you the most. Some of the popular majors are listed, which might help you:

• Pre-Medical Sciences
• Botany
• Zoology
• Marine Biology
• General Biology

A good research work and discoveries in the particular field will definitely make you closer to evolutionary.

Regarding Abroad Studies, that depends on you as well, considering the given factors:

• If you are comfortable studying in a different country, with different culture and rules with less of your known ones
• Whether you can afford college fees, food and living expense (You can try for Scholarships as well)
• Whether you are getting admissions into a top notch, Ivy-League college

If you are able to satisfy these conditions, then there is no harm in studying abroad.

All the best.