This book is intended for the student of graduate level. It provides all the basic concepts and latest information on Genetics. As the phenomena of evolution is on run so all the relevant fields are affected and ever changing. I have tried my best to gather all the latest information to provide all the update concepts. Further this book introduced some new concepts with the old one. Again it discusses the major problems up-coming in the future. And also it emphasised on the recent development in the relevant field.