CONTAMINANTES
Mixed-sex human embryo created: An experiment in the United States has created a mixed-sex human embryo.
The team involved insists that the creation of an hermaphrodite human embryo was designed to cure illness, but critics say moral and ethical standards have been breached.
The process they used creates what is known as a "chimaera" - a blend of two embryos, each of which would have a distinct genetic identities.
But any attempt to produce such a baby would provoke a worldwide ethical storm.