It is a great pleasure to me to bring about a book An Introduction to Genetics. This text has been designated in a manner to suit the needs of degree students of Indian Universities. The author who has to his credit 11 years of teaching experience observed that one has to refere a number of books to cover up to entries syllabus. Moreover, genetics is a modern science and interesting results of extensive research in this field are coming out from thousands of laboratories throughout the world. To provide the students with recent findings in this field many books are published . For an average understanding, it is difficult to avail of all the books on the subject. In rural areas, where the colleges have in adequate to the required books to cope-up with the syllabus. The author has ventured over this task with a view to giving the practical assistance to the students and the teacher. The author has meticulously made every effort to include the latest crums of information sa as to cater the needs of the students and the teachers.