Contents: 1. The Cell: A Basic Unit of Life. 2. Cell Wall and Cell Membrane. 3. Cytoplasmic Organelles. 4. Non-living Cytoplasmic Inclusions or Ergastic Substances. 5. The Structure and Functions of Nucleus. 6. The Chromosomes and Nucleosomes. 7. Cell Cycle and Cell Division. 8. Mendelism: The Nuclear Inheritance (Mendels Laws of Inheritance). 9. Interaction of Genes (Modifications of Mendels Laws). 10. Linkage and Crossing Over. 11. Chromosomal Aberrations (Architectural or Structural Changes in Chromosomes). 12. Polyploidy (Numerical Changes in Chromosomes). 13. Extra-nuclear Inheritance (The Organellar Genetics or Cytoplasmic Inheritance). 14. Sex Determination and Sex Reversals. 15. Human Genetics. 16. Microbial Genetics. 17. Mutations. 18. Concept of Gene (A Retrospective Approach). 19. Organisation of Genes. 20. The Genetic Material. 21. DNA : Structure and Replication. 22. Ribonucleic Acid: Structure and Transcription. 23. Biosynthesis of Proteins. 24. Regulation of Gene Activity. 25. Population Genetics (Basics). 26. Recombinant DNA Technology. 27. rDNA Technology (Retrospects). 28. Genetically Modified Organisms (GM0s) (Transgenic Organisms). 29. Genetically Modified Plants/Crops (Transgenic Plants). 30. Bioinformatics and Proteomics. 31. Biotechnology. 32. Applied Biotechnology and Genetic Engineering. 34. Origin of Life. 34. Evidences of Evolution. 35. Theories of Organic Evolution. Glossary of Select Terms. Index.