Concept 7 All cells arise from pre-existing cells.
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(1 of 4) Photomicrograph of a cell dividing: nucleus is visible as dark staining organelle
(2 of 4) Cell dividing: chromosomes are visible and lined up at the plane of division.
(3 of 4) Cell dividing: chromosomes are being pulled toward the cellular poles.
(4 of 4) Cell dividing: mother cell divides resulting in two daughter cells each with its own nucleus.
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In an effort to preserve and prepare cells for examination, early microscopists used lots of different liquids and chemicals such as alcohol, vinegar, ink and turpentine.
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If microscopes and cellular dyes were not available, would it have been possible to develop the chromosomal theory of inheritance?
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(1 of 4) Photomicrograph of a cell dividing: nucleus is visible as dark staining organelle
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