Conversely, the allantois often starts off small but expands rapidly during development to meet the storage needs of the embryo and to take on its second function as a site for gas exchange.
And then once autumn comes round, the national board will start vetting the GP-led groups to check they are ready to start managing local health services and Monitor will take on its new functions as economic regulator.
This loop turns out to be functionally significant in the lens, and there is evidence that it began small and was accentuated by gradual selection as the crystallin took on its new visual function (Sweeney et al. 2007).
Over three centuries, the web they wove took on its own life, continuing to function without requiring the guiding hand of central figures.
Since WUS is not expressed in the root meristem, it will be interesting to investigate, which WOX gene takes on its function in the root.
Thus, a body part that began with one function evolved to take on an additional function without changing shape.
It seems likely that the ancestor of P. patens underwent a whole-genome duplication early in its history, Quatrano notes, possibly freeing up some genes to take on new functions.
For more than a decade, many researchers have assumed that teleosts' dizzying array of body types evolved because their immediate ancestor somehow duplicated its entire genome, leaving whole sets of genes free to take on other functions.
If by some mutation a spare navigation module developed in the brain, it would have been free to take on other functions, like the generation of syntax.
Therefore, it has fallen to proactive entrepreneurs to fill that institutional void and take on an aggregator function.
"The duplicated genes can take on a novel function".
