Conversation so far:
who proposed the theory of inheritance of acquired characteristics
Jean-Baptiste Lamarck Lamarck is best known for his Theory of Inheritance of Acquired Characteristics, first presented in 1801.
what does the theory of inheritance of acquired characteristics state
The Theory of Inheritance of Acquired Characteristics states that if an organism changes during life in order to adapt to its environment, those changes are passed on to its offspring.
was the theory of inheritance of acquired characteristics disproved
Lamarck's Theory of Inheritance of Acquired Characteristics has been disproved.

Question: why
Self-contained rewrite: why was the theory of inheritance of acquired characteristics disproved