As the costs of DNA analysis come down, we've seen the rise of direct-to-consumer genetic testing, allowing anyone to spit in a tube, pop it in the post and get a personalised readout direct to their inbox. But what do these tests actually reveal? Plus, how advertising execs can help us talk about genes, digging up the secrets in dogs genomes, and our gene of the month is totally legless. Like this podcast? Please help us by supporting the Naked Scientists