Almost all animals have symmetrical bodies. Bilateral symmetry is almost universal in all animals and is only very rarely broken—with exceptions like the five-armed starfish or crab species that have ...

In nature, flowers may share morphological features, even across distantly related species. Bilateral symmetry is one such feature found in flowers of various taxa, such as orchids and legumes.

Fossils of the bilaterian Ikaria wariootia found in South Australia represent one of the oldest examples of an organism with anterior and posterior differentiation, according to a study. During the ...

This is a preview. Log in through your library . Abstract Certain organs of several species of plants express bilateral symmetry. An attempt is made to understand the laws operating in the expression ...

A new sunflower family tree used skimmed genomes to increase the number of species sampled, revealing that flower symmetry evolved multiple times independently, a process called convergent evolution, ...

Women have more orgasms during sex with men who are more symmetrical. Does this penchant for order cloud our ability to see the universe accurately? A new book by theoretical astrophysicist Mario ...

The star shape of the starfish (five arms) is intriguing to many marine aficionados. But how it came to be is a question not many can answer. It is due to a gap in the fossil record of echinoderms, ...

Researchers have discovered new insights into the appearance of humans' common ancestor. It will help to construct a natural system of the animal kingdom, through which the classification of species ...