Synopsis With a view to bring together as compactly as possible the basic theories, issues and approaches in the entire spectrum of heredity and genetics, the following papers have been assembled for the benefit of the student as well as practicing biotechnologist and biochemist. It encompasses the earliest propagations by Mendel with relevant inferences and implications in the then new discipline. It also covers specific applications in the areas of pharmacology, agro-industry, tree breeding strategies and plant genetics. Both macro issues as well as micro aspects have been dealt with and we have pleasure in presenting the collection for the student, researcher and professional.