If a man dies and the widow wants to become pregnant, within a reasonable period of time, the urologist puts a needle into the testes, pulls out some sperm and fertilizes her egg. So the dead man is a new father, reversing all normal familial relationships and procedures. In Japan, they have now perfected an artificial womb. You no longer have to put the embryo into a human womb. Cloning has gotten completely out of hand, and it's potentially dangerous.
Nobody knows why.
The Japanese have now cloned a bull from a cloned bull. They are cloning clones until the land is full of cloned bulls. These bulls, by the way, are fertile. They have cloned a calf from the ear cells of an adult cow, which means you don't need to use repro-ductive cells anymore. You can take any cell in the body, even from the inside of the mouth, and clone.