Coming from a different angle, the Catholic bishops of England and Wales have told a parliamentary committee that human-animal hybrid embryos conceived in the laboratory should be regarded as human and their mothers should be allowed to give birth to them. The government is currently studying legislation which will allow the creation of chimeric embryos so long as they are destroyed within 14 days. However, the bishops do not see why “interspecies” embryos should be treated any differently than others.

In their submission to the committee, they said: “At the very least, embryos with a preponderance of human genes should be assumed to be embryonic human beings, and should be treated accordingly. In particular, it should not be a crime to transfer them, or other human embryos, to the body of the woman providing the ovum, in cases where a human ovum has been used to create them. Such a woman is the genetic mother, or partial mother, of the embryo; should she have a change of heart and wish to carry her child to term, she should not be prevented from doing so.”

However, the bishops still oppose the creation of chimeras — and most of the other provisions in the proposed legislation — as a violation of human rights.