EVERYDAY SCIENCE

Detailed explanation-1: -Lamarck’s theory of evolution is also known as the theory of inheritance of acquired characteristics. He believed that the characteristics an individual gains during his life time are passed on to the next generation.

Detailed explanation-2: -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.

Detailed explanation-3: -It is also called the inheritance of acquired characteristics or more recently soft inheritance.

Detailed explanation-4: -According to Lamarck, new needs (besoins) arise in animals as a result of a change in the environment. This leads to new types of behaviour involving new uses of pre-existing organs. Their use leads to an increase in size or to other methods of functioning. Conversely, the disuse of other parts leads to their decline.

Detailed explanation-5: -D.De Vries. Hint: The theory of inheritance acquired characteristics is also known as Lamarckism inheritance. He proposed that the characteristics which are acquired by an organism in his lifetime can be passed on the new offsprings.