HC Deb 24 January 1995 vol 253 c176W
Mr. Alton

To ask the Secretary of State for Health what surveys she has conducted to establish which scientists argue that conception in human reproduction occurs days later than fertilisation; and if she will make a statement.

Mr. Sackville

The accepted scientific view is that pregnancy does not occur until the fertilised ovum implants in the womb, which is usually around six days after fertilisation.