Latest Symmetry in biology Stories
The evolution of worms, insects, vertebrates and other “bilateral” animals from less complex creatures like jellyfish and sea anemones with “radial” symmetry may have been facilitated by the emergence of a completely new "operating system" for controlling genetic instructions in the cell.
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Brainless organisms choose a central arm and head that way
A research team at the Hubrecht Institute, Utrecht, demonstrates a mechanism by which left–right asymmetry in the body is established and maintained.
When people on airplanes ask Alan Newell what he works on, he tells them "flower arrangements".
A tug-of-war between the two sides of the brain causes it to become asymmetrical, according to research published today in the journal Neuron. Asymmetry in the brain is thought to be important to enable the two hemispheres to specialise and operate more efficiently.
Biologists have tracked down genes that control the handedness of snail shells, and they turn out to be similar to the genes used by humans to set up the left and right sides of the body.
Luidia sarsi is a species of starfish that is classified within the Luidiidae family. It can be found in a range that extends from the Mediterranean Sea to Norway and prefers a habitat in muddy or sandy areas. Adult individuals display pentaradial symmetry or pentamerism with five long arms that are bordered by bands of white spines that occur in groups of three. These arms reach a length of about 7.8 inches from tip to tip. This species is unique in that it develops differently than other...
Bathocyroe fosteri is a species of lobate ctenophore found in all oceans around the world. It is typically found at intermediate depths and is very abundant near the Mid-Atlantic Ridge. This deep-sea comb jelly is named for Alvin (DSV-2) pilot Dudley Foster, who is credited with first collecting the specimens. This specimen measures about two inches tall and is bioluminescent. This species, as well as other ctenophores, reproduce sexually, with little to know self-fertilization known....
- A morbid dread of being buried alive. Also spelled 'taphiphobia'.