Definition
Neo-lamarckian refers to a revival or modification of Lamarck's theory of inheritance of acquired characteristics, often incorporating modern genetic or epigenetic mechanisms. It's like a second look at Lamarck's ideas through the lens of modern science. These theories suggest that environmental factors can influence gene expression and that these changes can be passed down to future generations. This differs from traditional Lamarckism by focusing on molecular mechanisms rather than simply acquired traits. Neo-lamarckian ideas have gained some traction with the discovery of epigenetic inheritance, where environmental factors can alter gene expression without changing the DNA sequence itself. However, the extent and significance of epigenetic inheritance in evolution are still subjects of debate.