linkedin post 2015-01-26 05:19:15

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HANDEDNESS. "Most shells are right handed and possess overlapping whorls that coil around a single axis. Spiral coiling also appears to be dictated by a set of ‘behavioural’ rules involving shell sculpture ... Opisthostoma shells are 'sinistroid’ due to a reversal in coiling direction in the last half-whorl ... can possess two or three different coiling axes." https://lnkd.in/dNeQF-g View in LinkedIn
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linkedin post 2015-01-26 05:23:45

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COILING GENES. "The direction of snail shell coiling is controlled by a single pair of genes ... there is a right-coiling allele D, which is dominant to the left-coiling allele d ... However, the direction of cleavage is determined not by the genotype of the developing snail, but by the genotype of the snail's mother." https://lnkd.in/dctHRnB View in LinkedIn
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linkedin post 2015-01-26 05:26:49

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"LOGARITHMIC COILING IN SHELLS was first mathematically described over a century ago, the developmental bases of these shell forms remains unknown. Similarly, the three-dimensional ornamentations on shells, which can be seen as a deviation from simple coiling, emerge through largely unknown processes." https://lnkd.in/dSJZzWB View in LinkedIn
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linkedin post 2015-01-26 05:34:40

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MATHEMATATICIANS DESCRIBE BIOLOGY. "Biological morphogenesis is a mechanical pro- cess that connects genetic, molecular, and cellular activities with the macroscopic deformations shaping organisms. ... shell morphogenesis can be thought of as a trajectory unfolding in a shape space constrained by geometry and mechanics." https://lnkd.in/dSJZzWB View in LinkedIn
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linkedin post 2015-01-26 05:37:29

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SHELL PATTERNS IN SPACE AND TIME. "The patterns on shells of molluscs show an overwhelming diversity. Very little is known about the biological basis of shell patterning." (1987). A beautifil theoretical analysis of the complex pattern motifs of some shells. http://www.eb.tuebingen.mpg.de/research/emeriti/hans-meinhardt/shells.html View in LinkedIn
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