How did Lamarckism explain the development of horns in ruminant animals?

According to the theory of Lamarckism, the development of horns in ruminant animals was explained as a result of their behavior during combat. Lamarck proposed that when these animals butted their heads together during fights, the physical stress and activity modified the structure of their heads, leading to the growth of horns. He believed that these acquired physical alterations were then inherited by the animals' offspring.1

It is important to note that Lamarckism, which suggests that physical changes acquired during an organism's lifetime can be transmitted to the next generation, has been discredited by modern genetics. There is no scientific evidence to support the claim that such behavioral or physical adaptations are passed on through the germ cells to offspring. The scientific consensus affirms that traits are determined by genetic inheritance, not by the use or disuse of body parts during an individual's life.213