Even small differences in how fast animals grow during development can sum up to large differences in their adult body size. Nevertheless, adults of the same species are usually nearly identical in size. Benjamin Towbin, a postdoc in the Grosshans lab who is now at Uni Bern, discovered a mechanism that promotes such size uniformity without measuring size itself. His research using C. elegans showed that the speed of growth determines the speed of a genetic clock that times development.
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Source: Phys.org