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The “Different Phases of Mitosis Model” (Blister Series) provided by IBEX SCIENCES is a specialized medical and educational tool designed for biology labs and classrooms. It features a three-dimensional relief design that details the step-by-step process of eukaryotic cell division. [1, 2, 3, 4, 5]
The specific Blister Series refers to lightweight, durable vacuum-formed plastic relief models. These models are meticulously colored to highlight essential structures such as chromosomes, centromeres, centrosomes, and spindle fibers. [1, 2, 3]
The model realistically illustrates the transition through the cell cycle, dividing the continuous process of mitosis into its individual classic stages: [1, 2]
1. Interphase & Prophase
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- Interphase: The preparatory step where DNA duplicates and appears as loosely packed, diffused chromatin inside an intact nuclear envelope. [1, 2]
- Prophase: The official start of mitosis. The chromatin condenses into distinct, visible X-shaped chromosomes composed of twin sister chromatids held by a centromere. Centrosomes begin moving toward opposite ends of the cell to form the mitotic spindle. [1, 2, 3, 4, 5, 6]
2. Metaphase
3. Anaphase
4. Telophase & Cytokinesis
- Telophase: The reverse of prophase takes place. A new nuclear membrane reconstructs around each of the two identical sets of chromosomes. The chromosomes begin uncoiling back into loose chromatin. [1, 2, 3, 4]
- Cytokinesis: The physical splitting of the cytoplasm. An actin ring pinches the middle of the cell (forming a cleavage furrow in animal cells) to officially yield two distinct, genetically identical diploid daughter cells. [1, 2]
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