1. Starter © Snapshot Science, 2010Snapshot Science Some restaurants in Vietnam serve a local delicacy... …grilled lizards

2. Activity © Snapshot Science, 2010Snapshot Science Lizard lunch A scientist noticed that all the lizards in a restaurant tank looked identical. He thought this was strange. After studying the lizards, he realised that they were a new species. Even stranger – they were all clones.  Suggest how he knew they were a new species.  What are clones?  How do these lizards reproduce?

3. Activity © Snapshot Science, 2010Snapshot Science Lizard lunch The eggs in the lizard’s ovaries all contain a full amount of chromosomes. There is no need for fertilisation. The lizards reproduce asexually and all the offspring are identical to the mother and each other.  Why are the offspring identical?  Give some advantages and disadvantages of asexual reproduction.