When people adopted new customs, skills and technologies
Answer: Ability to roll the tongue IS NOT heritable.
Explanation:
This particular point is addressed in Adam Rutherford's book "A Brief History of Everyone Who Ever Lived". (I'm going from memory here so someone can correct me if I've got some details wrong): It was thought for a long time that tongue rolling WAS a heritable trait, but studies of identical twins showed that sometimes one twin can do it, while the other can't, which pretty much puts paid to that hypothesis. Apparently even the guy who first posited (or popularised?) the idea that it was heritable, is now embarrassed when he is told that some science classes still teach that it IS heritable.
As for the other 3 - no idea.
<span> Researching the history of religious vocation of women in the middle ages was a great challenge especially because the bulk of information regarding this era was written by men and for men. And in this era, the majority of women were illiterate; hence few recorded their thoughts and visions. Again many people did not readily understand the mystery of religious vocation, nor did they comprehend the fact that women can find fulfillment in a monastic milieu. However, such a call to solitude and prayer has been heard by women from the early days of the primitive Church and has continued, with varying degrees of popularity, throughout the centuries up to and including the present. So, many names survived the intervening centuries, whose education enabled them to share their visions and artistic accomplishments. From these survivors, twentieth-century scholars discovered playwrights, calligraphers, illuminators, embroiderers, lace workers, even printers, as well as mystical scholars and writers in the ranks of female medieval monastic.
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