Different genes, same result: How flies evolved multiple ways to define heads and tails

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One of the most important milestones in the early life of an organism is when the embryo breaks symmetry and arranges itself to form the head (anterior) at one end and tail (posterior) at the other end.

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One snail, five slimes: Collagen and calcium reshape mucus for different jobs

Snails are particularly active after a rain shower. Even on the Max Planck Campus in Potsdam-Golm, common brown-lipped snails (Cepaea nemoralis) leave behind shiny trails of mucus.

Brief by WorldPing · Original reporting by Phys.org