David Attenborough describes the process of human fertilisation, following sperm on their journey through the womb and along the fallopian tube to the egg.

This clip is from:
Bitesize Secondary, Science 1
First broadcast:
28 February 2008

Sexual reproduction in humans could be compared to that of other organisms and to asexual reproduction. Encourage the class to research and discuss different methods and relate these to success rates and species survival. Students may find it useful to create flow diagrams that describe the different processes that have to occur for each type of reproduction to succeed. This should inform their comparisons.