Babies made to order?

CONCEPTION; EMBRYOLOGY; HUMAN in vitro fertilization laws; AMERICAN law; GENETIC disorder diagnosis; GENETIC sex determination

The announcement that the Great Britain's Human Fertilisation and Embryology Authority is to consider relaxing its rules—though only to allow couples to choose a baby whose tissue could save the life of a sibling—has led to dire warnings that this is the start of a slippery slope. In countries where the rules are less strict, such as the United States, a few fertile parents are already choosing to undergo in vitro fertilization so they can use pre-implantation genetic diagnosis to select children of the desired sex.