A Theory Of Development And Heredity (1893) - Henry B. Orr

""A Theory of Development and Heredity"" is a book written by Henry B. Orr in 1893. The book delves into the scientific study of genetics and the evolution of living organisms. Orr presents a theory that combines the principles of Darwinism and Lamarckism, arguing that both mechanisms are involved in the development and heredity of organisms. The book is divided into three parts. The first part provides an overview of the history of biological research and the development of evolutionary theory. The second part focuses on the mechanisms of heredity and how they affect the development of organisms. Orr introduces the concept of ""determinants"", which are responsible for the characteristics of an organism and are passed down from generation to generation. The third part of the book discusses the role of environment in the development of organisms. Orr argues that the environment can influence the expression of determinants, leading to changes in the characteristics of organisms. He also discusses the concept of ""organic selection"", which refers to the selection of organisms based on their ability to adapt to their environment. Overall, ""A Theory of Development and Heredity"" provides a comprehensive overview of the scientific study of genetics and evolution. Orr's theory combines the principles of Darwinism and Lamarckism, providing a unique perspective on the mechanisms of heredity and the role of environment in the development of organisms.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.

EAN: 9781436754811