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  Ruth Benerito | Inside ...  
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Bajo el liderazgo de Benerito, el equipo de químicos encontró una importante pieza del rompecabezas “como proteger el algodón contra las arrugas” cuando desarrollaron un nuevo proceso para el tratamiento de las fibras.
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Under Benerito's leadership, a team of chemists found one important piece of the “how to wrinkle-proof cotton” puzzle when they developed a new process for treating the fibers. The process, called cross-linking, joins new ring-shaped organic compounds to the polymer chains, replacing the hydrogen bonds with strong new chemical bonds (see Figure 4). (For more about basic organic compounds, see our Carbon Chemistry: An Introduction module.) Cross-linking keeps the polymers from breaking apart, so the cotton fabric comes out of the dryer without wrinkles.
  Orgánulos Celulares I |...  
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Libre de la interferencia del citoplasma, reacciones químicas nuevas que dan poder a la combinación de genes, a la reparación de ADN y la expresión de genes eventualmente evolucionó y la estructura del ADN en si comenzó a cambiar. El ADN evoluciono de su forma antigua – la estructura de aro simple que se ve en bacterias – hasta los lazos largos complejos de nucleótidos que componen nuestro propio ADN.
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The nucleus offered another important benefit. Inside the protective environment created by the nucleus, the DNA was able to evolve in ways that it never had before. Free from the interference from the cell's cytoplasm, new chemical reactions that power gene recombination, DNA repair, and gene expression eventually evolved, and the structure of DNA itself began to change. DNA evolved from its ancient form – the simple ring-like structure seen in bacteria – to the long intricate strings of nucleotides that make up our own DNA. With a single evolutionary change – the development of a nucleus – eukaryotic cells were set on a course for greater diversity and specialization than prokaryotic cells could ever achieve.