Mutation that made it easier to ride horses evolved more than 1000 years ago Sit

Mutation that made it easier to ride horses evolved more than 1000 years ago

Sitting in the saddle can still be a bumpy ride, but things got a lot smoother nearly 12 centuries ago, when a single genetic mutation arising in the medieval United Kingdom and Iceland gave horses their ability to “amble,” or walk with a relatively smooth, four-beat rhythm versus a bumpier, more erratic pattern.