Hello Patel,

To become a genetic engineer, the bare minimum education requirement will be a bachelor's degree in biochemistry, biophysics, molecular biology, or molecular genetics. However, in most cases it will be much more beneficial to have a master's or doctorate level degree in molecular genetics or molecular biology instead. Undergraduate degrees may provide an initial entry point into the field, but holding a PhD is the primary path used to enter the field and conduct your own work.

Complete a graduate / postgraduate degree in genetics or related fields such as Biotechnology , molecular biology , microbiology or biochemistry from a recognized university
--Selection Process :
graduate course is based on merit 
the marks secured in the final exam of 10+2 & Entrance exam
Entrance exams are 
JEE
BITSAT
WBJEE
AIEEE
postgraduate course in different universities is through an All India Combined Entrance Exam Conducted by JNU, New Delhi

--Here is a list of colleges in india for genetic engineering u can try in these colleges.

1.University of Poona

2.University of Delhi

3.Barkatullah Vishwavidyalaya

4.Osmania University

5.University of Kerala

6.Kakatiya University

and many more colleges are also there.

all the best.