Images Dated 13th June 2001

Human sperm cells

Sperm. Computer artwork of human sperm (spermatozoa), the sex cells of the male. Each sperm is about 0.065 millimetres in length. Its head contains genetic material that is transferred to the female egg (ovum) during fertilisation. The flexible tail enables the sperm to propel itself along the female reproductive tract. Only one sperm can successfully penetrate the egg and fertilise it by fusion of its genetic material with that of the egg. A sperm is formed by meiotic cell division in the testes. It contains 23 chromosomes, including an X or Y sex chromosome

© MEHAU KULYK/SCIENCE PHOTO LIBRARY

Formula Three: Under the stunning backdrop of Mount Fuji, Mika Hakkinen Ralt RT24-Mugen negotiates a tight chicane

Under the stunning backdrop of Mount Fuji, Mika Hakkinen (FIN) Ralt RT24-Mugen negotiates a tight chicane. He failed to score a top six finish in the race.
International Formula Three, Euro-Macau-Fuji Challenge Cup, Fuji International Speedway, Japan, 2 December 1990

© Sutton Motorsport Images

Formula Three: Michael Schumacher attempts his first outrageous manoeuvre of the day on Mika Hakkinen

Michael Schumacher (GER) (centre) attempts his first outrageous manoeuvre of the day on Mika Hakkinen (FIN). For his piece de resistance Michael would push Mika off the circuit to win the Macau Grand Prix.
International Formula Three, Macau Grand Prix, Hong Kong, 25 November 1990

© Sutton Motorsport Images