For self-assessment questions, with exercises and discussions, just click on the correct topic at Biology GCSE & IGCSE Question Bank. A powerpoint can be downloaded from the same site here.Thes-cool revision sitelets you revise the topic, summarizes the topic & tests you on it. GCSE Bitesizehas revision pages (that take you through the topic), a test and an activity.
Here’s Penguins in peril: Inheritance – know your genetic jargon & ratios:
And here Paul Andersen introduces A Beginner’s Guide to Punnett Squares in a 12m 15s tutorial. He also gives examples of monohybrid crosses and one example of a dihybrid cross (which we don’t need to know for SL).
An animated, narrated tutorial on Mendel’s experiments & genetic crosses from Sinauer Associates. In Crash Course Biology #9 – Heredity, Hank and his brother John discuss heredity via the gross example of relative ear wax moistness.
Some excellent interactive animations & tutorials on Stem Cells, Gene Therapy or Cloning just click on Genetic Technology at the bottom of this page or forDNA extraction, Gel electrophoresis, PCR & DNA microarraysjust click on Virtual Labs.