Researchers have identified the genetic and mechanical mechanisms that determine the left- or right-coiling direction of snail shells.

What it means

Researchers have identified a specific myosin gene whose natural variation determines whether Japanese snails develop left- or right-coiling shells. The gene's two versions are both viable and produce different chiral shapes, offering a genetic explanation for why snails of opposite coil often cannot mate due to misaligned genitals.

Accuracy & sourcesGrounded

The claim is based on a peer-reviewed study published by University of Nottingham researchers, reported directly by the university news office and Phys.org. The reporting is close to the primary source, with confirmed genetic and experimental evidence.

How new

Genuinely new: the paper and news coverage date from October 16, 2026.

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