This Encyclopedic Dictionary Has Been Essentially a Compilation and Editing of the Terms and Concepts Taken From Genetics And Organic Evolution. Many Words Borrowed Form More General Usage Has Been Endowed With Very Special Meaning, Sometimes Not Obvious to the Uninitiated. The Entries Have Been Represented In A Clear And Explanatory Style To Provide Both Straight Forward Definitions And Invaluable Background Information. This Approach Combined With An Extensive Cross Referencing System Enables The Reader To Place Each Entry Into A Broader Scientific Context. Many Diagrams Have Been Incorporated Whenever The Meaning Of A Term Can Be Best Conveyed By Means Of A Diagram.Every Effort Has Been Made To Include Certain Entries Which Take Into Account Of Recent Developments And Trends In Genetics And Organic Evolution. The Terms Included In This Encyclopaedical Dictionary Have Been Presented In Brief Analytical Phrases Thereby Avoiding The More Comprehensive Type Of Treatment Appropriate To Large Reference Works. The Extent Of Each Entry Has Been Determined By The Need For Definition Of Meaning, Function And Agricultural Relevance. Also, Certain Entries Have Been Added To Take Into Account Of Recent Developments And Trends In Agriculture. The Encyclopedic Dictionary Will Be Of Immense Value To The Students Of Genetics And Organic Evolution, Botany, Ecology, Biology, Microbiology, Anthropology, Biochemistry, Archaeology, Geography, Geology, Agriculture And Environmental Science.