<p>Sorry. I must have confused you with someone else applying from India.</p>
<p>In your situation, I would do the same thing - go to school locally then go to the US for graduate education. There are several very good schools in Singapore to choose from (I can name more universities in Singapore than in India off the top of my head).</p>
<p>I'm still not sure why you can't pursue Bio at the undergrad level, but either way, I would take as many Bio classes as possible as an undergrad.</p>