RESEARCHERS from the Tokyo University of Science, Japan, have used CRISPR gene editing technology to make snails with shells that coil the ‘wrong’ way, providing insights into the fundamental basis of left-right asymmetry in animals. These findings are published in the journal Development. the snail embryo was just a single cell. Moreover, the mutant snails could be reared to adults, when they produced exclusively leftward-coiling offspring.
How the snail’s shell got its coil
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