Herding Hemingway’s Cats – Understanding how our genes work

We’ve all heard of genes – they make your eyes blue, hair curly or nose straight. But how do they actually work and why do siblings look so different when they share much of their genetic makeup? Kat Arney, author of ‘Herding Hemingway’s Cats’, and her sister, comedian Helen Arney, set aside their shared genetic quirks and sibling rivalry to explain the latest thinking, telling stories with their trademark flair and wit about cats with thumbs, fish with hips and wobbly worms.