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3. Morphogenesis. program of orderly changes in body size, shape & proportions. cells migrate to specific locations sheets of cells expand and fold as cells change in shape apoptosis helps to sculpt body parts
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3. Morphogenesis • program of orderly changes in body size, shape & proportions. • cells migrate to specific locations • sheets of cells expand and fold as cells change in shape • apoptosis helps to sculpt body parts • results in specialized tissues & organs at prescribed locations, at prescribed times.