A brief introduction to DNA, starting with it's discovery, which is accredited to two young scientist called Francis Crick and James Watson. The four chemical that are the basis of DNA are explained and how they play a part in all life on Earth. The Human Genome Project, which began in 1990, is explained and how it helped scientist work out the DNA code of human life. The project finished ahead of schedule and has been used to help new parents when screening for genetic diseases such as sickle cell anaemia and thalassemia. Detail is given regarding the genetic basis of these diseases. The concept of designer babies is also introduced.

This clip is from:
First broadcast:
18 November 2008

This could be used as a review of the structure of DNA. After watching it, students could be asked to explain what the Human Genome Project and genetic screening are. This could lend itself to beginning a discussion on the concept of designer babies, and the role genetics should play in creating life.