Conversation so far:
who proposed the idea of inheritance of acquired characteristics
Lamarck is best known for his Theory of Inheritance of Acquired Characteristics
when did lamarck present his theory of inheritance of acquired characteristics
Lamarck presented his Theory of Inheritance of Acquired Characteristics in 1801
was lamarck the first to believe in the inheritance of acquired characteristics idea
Lamarck was not the first to believe in the inheritance of acquired characters. He merely endorsed a belief which had been accepted for at least 2,200 years before his time

Question: what has supplanted the theory
Self-contained rewrite: what has supplanted the theory of inheritance of acquired characteristics