mother’s experience before pregnancy in mice can be passed to their offsprings, researches found. Basically, the researchers knockout certain genes (Ras-GRF-2) to cause them having memory defect. Then they put them in an “enriched environment”, where they receive a shock to their feet. Then they found that the offsprings of these enriched knockout mice associated the electric shock with the cage.More details at:Can experiences be passed on to offspring? – life – 06 February 2009 – New Scientist