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Merino sheep always flock while Highland sheep spread. The reason is that in Spain the summer feeding and winter feeding of the sheep were widely sep… - John Tyler Bonner
" "Merino sheep always flock while Highland sheep spread. The reason is that in Spain the summer feeding and winter feeding of the sheep were widely separated, and the shepherd had to march them many miles along the road and through the villages. If they did not flock, they would soon be lost in their seasonal journey. On the other hand, the Scottish shepherd never moves his Highland sheep large distances and wishes them to spread out as much as possible over the hills so that no one area is overgrazed, and both of these characteristics have been achieved by selective breeding.
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About John Tyler Bonner
John Tyler Bonner (May 12, 1920 – February 7, 2019) was an American biologist and professor at Princeton University. He was a leading expert on cellular slime molds and their evolution and development with implications for other organisms.
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Additional quotes by John Tyler Bonner
First, there was a selection for an increase in size by becoming multicellular, and once achieved there was a selection for better integration, a better coordination of the adhering cells to compete effectively for energy and for a way to reproduce successfully. Then, which each successive step of size increase, propelled always by the fact the uppermost size niche is never filled, there has been a further selection pressure for integration and coordination, often by new and innovative devices to accommodate the newly created larger organism.
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