Hello Student,

A biology scientist/research biologist must complete educational requirements, including  a bachelor's, master's, and doctoral degree, before they can find a position in the field.

A Doctor of Philosophy in biology will let you work as a research biologist and qualify for other career advancements

After earning your PhD you may work and research for government agency , private sector etc.

So the step wise procedure would be :

1. Bachelor's Degree
2. Master's Degree
3. Doctoral Degree
4. Work as a research biologist.

Hope this helps.