Lamarckism not quite revived.
Epigenetics, in which the environment changes gene behavior without altering the genes themselves, has given a glimmer of hope to die-hard Lamarckians. Epigenetics does allow traits acquired during an organism's lifetime to be passed on to offspring. Because epigenetic changes can affect many aspects of an organism, the process boosts genetic variation overall, but does not promote specific changes as Lamarck might have argued. Those variations then become fodder for natural selection to act on."