Crabs' sideways walk may have evolved just once

www.sciencenews.org

Crabs' sideways walk may have evolved just once

www.sciencenews.org

ZeroCool@piefed.ca to

Biodiversity@mander.xyzEnglish · 9 hours ago

A study of 50 crab species in Japan traces the iconic sideways walk to a single ancestor, suggesting the trait drove the group's remarkable diversity.

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A community about the variety of life on Earth at all levels; including plants, animals, bacteria, and fungi.

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Biodiversity is a term used to describe the enormous variety of life on Earth. It can be used more specifically to refer to all of the species in one region or ecosystem. Biodiversity refers to every living thing, including plants, bacteria, animals, and humans. Scientists have estimated that there are around 8.7 million species of plants and animals in existence. However, only around 1.2 million species have been identified and described so far, most of which are insects. This means that millions of other organisms remain a complete mystery.

Over generations, all of the species that are currently alive today have evolved unique traits that make them distinct from other species. These differences are what scientists use to tell one species from another. Organisms that have evolved to be so different from one another that they can no longer reproduce with each other are considered different species. All organisms that can reproduce with each other fall into one species. Read more…

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