I completed bsc in 2004 with 83% scores both on honours and aggregate. I want to continue my studies further. What are the prospects

Completed BSc Zoology honours with 83% marks in 2004. Have been working since then in telecom. Working in reputed Telecom MNC since 2007. Can I get back to studies now. I want to pursue studies in science, preferably in Genetics, bioinformatics or biotechnology