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Contents .................................................................................................................. 2 What is Pre-Implantation Genetic Diagnosis? ......... 3 The Procedure .......................................................................................... 3 What is PGD used for? ........................................................................... 4 Diseases which PGD can test for ............................................. 4 Could PGD be used to choose the sex of a baby? ... 5 Advantages & Disadvantages of PGD ................................. 6 The Reliability of PGD ........................................................................ 6 Ethical Issues .................................................................................................... 7 Personal Viewpoint .................................................................................... 9 Evidence .................................................................................................................. 10 Reference List ................................................................................................... 11 Pre-Implantation Genetic Diagnosis (PGD) is a type of genetic testing. It is defined as: "a technique used during in-vitro fertilisation (IVF) to test embryos for genetic disorders prior to their transfer to the uterus." (http://www.bcmivf/Glossary.htm) Firstly the women is given drugs to produce 'super-ovulation'. Using standard IVF techniques, the eggs are placed in a dish and fertilised with sperm. After about 3 days, the embryo has divided into about 8 cells. The photo shows the start of the procedure. The embryo is fixed in position with a holding pipette (shown on the left). A second pipette (on the right) is used...

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