The spectacular variety of colour and growth form seen in our gardens is the result of the action of thousands of genes operating in pathways and networks. However, the basic principles of genetics are very simple and this lecture will explain how genes work, how they give rise to colour and form, and how they are re-assorted during reproduction to produce new and exciting plant varieties. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

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