Zoology

B.Sc. Zoology is more inclining towards modern technology, so after doing zoology you can choose any specialisation course in genetics, biotechnology, Endocrinology, Immunology, applied zoology, wildlife Science, Ecology and you will be eligible for all these specialised courses in most university. Additionally, after doing the course one can appear for Indian Forest Service (IFoS) exam. Even positions are available in Central Government Offices like Zoological Survey of India, etc. For Research Fellows/Doctoral degree holders. B.Sc. Fisheries and aquaculture is one of best leading business and industry in the world. In fisheries section you may join for B.F.Sc. Or M.F.Sc. Or B.Sc. Or M.Sc. In fisheries or aquaculture. It opens the window towards the mass opportunities in fisheries. There are large number of vacancies in government and private section. Due to increase in crime rate and criminals, the scope of Forensic Science is increased exponentially. There are lots of job opportunities in the field of Forensic Science. The need of forensic scientists is huge all around the world, especially in India. Some of the forensic scientists visit the crime scene to collect the evidence themselves and another one work in a forensic laboratory to perform analysis on objects. In the forensic laboratory, they testify as expert observers in both criminal and civil cases and can work for either the defense or the prosecution. Forensic scientists can be employed in the government sector. They work in different law enforcement agencies and investigation departments such as police, investigative services of state and central government and legal system. Some of the private agencies also employed those candidates who have some qualification in this field. A trained forensic scientist may hire by the Central Bureau of Investigation (CBI) & Intelligence Bureau (IB). You can also work as a freelancer as forensic scientists specializing in one segment & can be paid much. You can also work as a legal counselor after gaining experience as a Forensic Scientist. So from above B.Sc. Forensic Science and Zoology are the best.

You have not write about the college/university name from where you wish to pursue the M.Sc. Genetics course. However, the eligibility criteria of DU's is given below for reference please.
Eligibility criteria of M.Sc. Genetics: A student seeking admission of M.Sc. (Genetics) must have passed B.Sc. (General) or B.Sc. (Hons. ). Or an equivalent undergraduate degree in any branch of life sciences / physical sciences / chemical sciences / mathematical sciences / medical sciences / pharmacology / any branch of biology / paramedical sciences with at least 60% marks in their main subject (for Hons. Stream) or in aggregate (for B.Sc. General) or other equivalent undergraduate degree. Those appearing for their final year exams can also appear for the entrance test, but they will have to produce the provisional certificate of results by the end of July of the concerned year. So from above B.Sc. BZC course is falling under the Life Science stream. Hence, you are eligible for pursuing the M.Sc. Genetics course.