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Robert Hooke discovered cells.
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Used single-lens microscopes, to make the first observations of bacteria. His extensive research on the growth of small animals such as fleas,helped disprove the theory of spontaneous generation of life.
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Founded modern histology by defining the cell as the basic unit of animal structure.
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Concluded that all plant tissues are composed of cells and that an embryonic plant arose from a single cell.
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Declared that every cell is derived from a preexisting cell.
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Discovered the fundamental laws of inheritance. He deduced that genes come in pairs and are inherited as distinct units, one from each parent.
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the first person to use the term genetics to describe the study of heredity.
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Made the punnet square to keep track of heredity.
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Discovered the covalent bond and the concept of electron pairs.
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Showed us that bacteria can distinctly change their function and form through transformation.
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Made the experiment called the "Avery MacLeod McCarty" experiment in which he injected mice with s form and r form bacteria to show that DNA was able to transform bacteria.
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Made the Krebs Cycle that is based on cellular respiration.
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Took x-ray diffraction images of DNA.
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The discovery in 1953 of the double helix, the twisted-ladder structure of deoxyribonucleic acid (DNA).