Nurturing behaviors are passed down intergenerationally
βThere's a very famous piece of research by a man named Michael Meany. And he researched mammals. And he said that the mammal mothers who, the rat mothers who licked and groomed their young passed down generationally the ability in the next generation to lick and groom their young. But if a mother could not lick and groom her young, she did not pass down the ability to lick and groom to the next generation. Now that's not genetic. That's called the inheritance of acquired characteristics.β

