Symmetry is so fundamental to multicellular life that it can be easy to overlook. In fact, symmetry only seems to stand out in the notable instances where it’s quite obviously broken, such as in the case of the male fiddler crab, which possesses one smaller claw and an opposite claw that’s many times larger. In this short video, Laila Moubayidin, a Royal Society University Research Fellow at the John Innes Centre in Norwich, England, discusses why symmetry came to dominate life on Earth, and how many complex life forms, such as humans, transitioned from radial to lateral symmetry. Moubayidin also breaks down how life forms can evolve to break symmetry once they’ve established it, how some animals possess different degrees of symmetry across a lifetime, and the many ways in which humans lack perfect symmetry.
Video by the Royal Society
video
Ecology and environmental sciences
GPS tracking reveals stunning insights into the patterns of migratory birds
6 minutes
video
Human rights and justice
Can providing humanitarian aid be illegal? A troubling case from the US-Mexico border
17 minutes
video
Space exploration
The rarely told story of the fruit flies, primates and canines that preceded us in space
12 minutes
video
Neuroscience
This intricate map of a fruit fly brain could signal a revolution in neuroscience
2 minutes
video
Information and communication
Coverage of the ‘balloon boy’ hoax forms a withering indictment of for-profit news
17 minutes
video
Meaning and the good life
Wander through the English countryside with two teens trying to make sense of the world
10 minutes
video
Computing and artificial intelligence
The ‘cloud’ requires heaps of energy to stay aloft. Could synthetic DNA be the answer?
12 minutes
video
Biology
Brilliant dots of colour form exquisite patterns in this close-up of butterfly wings
3 minutes
video
Genetics
Why it took a century to work out that humans interbred with Neanderthals
22 minutes