How the Snake Lost Its Legs the butterfly, the snake, and the cheetah. Each consists of three to eight sections named in the style of Rudyard Kipling's "Just So Stories", with titles like "How the butterfly got its spots" or "How the snake elongated its body", though a couple of sections use "Why?" rather than "How?", as in "Why the fly twirls his penis" (it rotates during embryonic development under the control of different genes). In these chapters, Held explains the mechanics of evolutionary developmental biology, complete with accounts of what genes such as hox, hedgehog, and engrailed do to shape bodies. The third part is
How the Daughter-in-Law Got the Coins with many ways to trick the heirs into thinking there is wealth to be had. How the Daughter-in-Law Got the Coins How the Daughter-in-Law Got the Coins is a Sri Lankan fairy tale collected by H. Parker in "Village Folk-Tales of Ceylon". It is Aarne–Thompson type 982, Ungrateful Heirs. A man marries a rich woman who did not help his mother. He gives his mother a bag full of pottery shards. The mother contracts leprosy, but since she shakes the bags where the daughter-in-law can hear and announces that whoever cares for it will have, the daughter-in-law tends her. After