"The book is basic in the sense that it begins at the beginning and is entirely self-contained. It is also comprehensive and contains detailed descriptions of Molecular Genetics. The aim has been to make the subject matter broadly accessible to advanced students, whilst at the same time providing a reference text for graduate scholars and research scientists active in the field.
This book has been written in easy and fluent language expressive and self-explanatory labelled diagrams, concise but not too brief, written to the point starting from fundamentals and finishing to the most advanced and current concepts. All diagrams have been provided with detailed legends. Some diagrams have been drawn the author himself from the original source, while the remaining ones are quoted from the authentic works.
Molecular genetics is the field of biology that studies the structure and function of genes at a molecular level and thus employs methods of both molecular biology and genetics. The study of chromosomes and gene expression of an organism can give insight into heredity, genetic variation, and mutations. This is useful in the study of developmental biology and in understanding and treating genetic diseases.
A mutation in a gene can cause encoded proteins and the cells that rely on those proteins to malfunction. Conditions related to gene mutations are called genetic disorders. However, altering a patient's genes can sometimes be used to treat or cure a disease as well. Gene therapy can be used to replace a mutated gene with the correct copy of the gene, to inactivate or knockout the expression of a malfunctioning gene, or to introduce a foreign gene to the body to help fight disease. Major diseases that can be treated with gene therapy include viral infections, cancers, and inherited disorders, including immune system disorders."