Epigenetic Mutations

However, scientists nowadays are starting to think that perhaps Lamarck's theory wasn't completely outrageous. The reason behind this phenomenon is because hereditary epigenetic changes seem to violate Mendelian principles. Epigenetic changes occur by transcriptional modifications due to alterations on histone tail charges, chromatin binding, X-chromosome inactivations etc.  Although these changes pass on from mother to daughter cells, normally the modifications are erased in the germ cells. Recently, however, accumulating evidence suggests the opposite: passing on of epimutations. The phenomenon "has been spotted in plants, fruit flies and yeast". There was also a major study in mammals that indicated towards epimutations heredity.