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The present title, with a skilful mix of breadth combined with detail, reviews what is known about ecology. This carefully organized clearly written text book emphasizes the inter relationship between the various living organisms and the contrasting environments in which they live. This text is a painstaking effort in the attempt to include the contribution of the eminent scientists and experts of different fields providing an insight into the new and old basic concepts of terrestrial and aquatic ecosystem particularly the meaning of ecosystem evolution and on the various aspects of environmental science related to conservation of aquatic environment and its resources. Contents : 1. Introduction 2. History of Genetics 3. Mendelian Principle 4. Physical basis of Heredity 5. Chromosomes 6. Cell Division 7. Crossing Over 8. Chromosome Maps 9. Linkage 10. Interaction of Genes 11. Multiple Alleles and Blood Groups 12. Sex-Linked Inheritance 13. Cytoplasmic Inheritance 14. Sex Determination 15. Non-Disjunction 16. Sex Differentiation 17. Quantitative Inheritance 18. Polyploidy 19. Mutations 20. Lethal Genes 21. Concepts of Gene 22. Nature of the Genetic Material 23. Nucleic Acids 24. Biological Replication 25. Enzymes of DNA Synthesis 26. Ribonucleic Acid (RNA) 27. RNA Biosynthesis 28. Protin Synthesis 29. Gene Expression 30. Genetic Code 31. DNA Cloning and Fingerprints 32. Genetic Engineering 33. Pedigree Analysis 34. Human Genetics and Chromosomal Abnormalities 35. Gene Action and Related Diseases 36. Eugenics and Euphenics 37. Population Genetics 38. Inbreeding, Outbreeding and Hybrid Vigour 39. Gene and Behaviour 40. Microbial Genetics 41. Development Genetics Glossary
