BiologyCode 5090
Variation
What this topic asks you to be able to do
- describe variation as the way individuals within one species differ from each other
- understand that a spread of phenotypes lying between two extremes arises from continuous variation, including body length and body mass
- Understand that discontinuous variation produces a small number of distinct phenotypes with no intermediates, including ABO blood groups and the shape and colour of pea seeds
- understand that discontinuous variation is generally brought about by genes only, whereas continuous variation is produced by genes together with the environment
- Investigate examples of both continuous and discontinuous variation and describe them