அனைத்து செல்கள் முன்பே உள்ள செல்களிலிருந்து எழுகின்றன.
(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.
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.
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