Appeals to Lamarckian inheritance never entirely disappeared in the years since the Modern Synthesis. animals, plants) change during their lifetime, and then pass these changes onto their offspring. The most carefully considered view of evolution was expressed by the French biologist Jean-Baptiste Lamarck, in his … Lamarckism was proposed by Jean-Baptiste de Monet Lamarck in the year 1744-1829. Despite having its heritage in ancient Greece, the theory of evolution was first brought to the consideration of the scientific world in the nineteenth century. Lamarck’s theory of evolution was based around how organisms (e.g. Lamarck was the youngest of 11 children in a family of the lesser nobility. This theory can be explained in the following points: Jean Baptise de Lamarck of France, Alfred Russel Wallace and Charles Darwin of England and Hugo De Vries of Holland are the main contributors to the theory of evolution. Two scientists Cuvier and Weismann were great critics of Lamarck. This theory was based on the principle that all the physical changes occurring in an individual during its lifetime are inherited by its offspring. Lamarck based his theory on two observations thought to be true in his day: “Use it or lose it” - Individuals lose characteristics they do not Some objections raised against Lamarckism are as follows: a. Stent, in Encyclopedia of Genetics, 2001. Lamarck’s theory of evolution was based around how organisms (e.g. - Darwin's Theory of Evolution is the widely held notion that all life is related and has descended from a common ancestor: the birds and the bananas, the fishes and the flowers -- all related. Biologists define an acquired characteristic as one that has developed in the course of the life of an individual in the somatic or body cells, usually as a direct response to some external change in the environment or through the use or disuse of a part. Lamarck is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801 (Darwin's first book dealing with natural selection was published in 1859): If an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring.He said that change is made by what the organisms want or need. His theory was that if an organism continually used a structure to carry animals, plants) change during their lifetime, and then pass these changes onto their offspring. Lamarck's Theory of Evolution, also known as Lamarckism, provides a historical context to the currently prevalent concept of genetic inheritance. Two scientists Cuvier and Weismann were great critics of Lamarck. LAMARCK Y LA CONSERVACIÓN ADAPTATIVA DE LA VIDA Asclepio, 2009, vol. Jean-Baptiste Lamarck (1744-1829) Lamarck was a French biologist who is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801. And in 1801, a French naturalist named Jean Baptiste Pierre Antoine de Monet, Chevalier de Lamarck took a great conceptual step and proposed a full-blown theory of evolution.