Witches Own Nothing

“Well, that seems kinda precipitate. Seems to me a man should have a choice whether to take up arms or not.” “We have no more choice in that than in whether or not to be born.” “Oh, I like choice, though,” he said. “I like choosing the jobs I take and the places I go and the food I eat and the companions I sit and yarn with. Don’t you wish for a choice once in a while ?” Serafina Pekkala considered, and then said, “Perhaps we don’t mean the same thing by choice, Mr. S...

 The Give and Take of Gender on Evolution

Trivers and Willard realized that the same general principle of sex allocation, which determines the gender of nematodes and fish, applies even to those creatures that cannot change sex but that take care of their young. They predicted that animals would be found to have some systematic control over the sex ratio of their own young. Think of it as a competition to have the most grandchildren. If males are polygamous, a successful son can give you far more grandchildren than a successful daugh...