Summary: From whole populations to individual cancers, we're taking a look at genes and evolution. We're also talking about dogs and their diseases, shining a light on Van Gogh's sunflowers, and wondering whether the USB-sized DNA sequence is hope or hype. Plus we've got our gene of the month - whether it's Sonic, Desert or Indian, we'll be carefully getting to grips with the prickly persona of the hedgehog gene.
