lecture recording on 21 February 2025 at 13.57.06 PM
Overview of Mitosis
Stages of Mitosis
Mitosis consists of four stages:
Prophase
Metaphase
Anaphase
Telophase
Interphase: Non-mitotic stage where the cell performs regular functions, consisting of Gap 1, Synthesis, and Gap 2.
Prophase
Chromatin Condensation: Chromatin folds to form visible chromosomes.
Nuclear Envelope Breakdown: The membrane separating the nucleus from cytoplasm disintegrates, allowing genetic material to be accessed.
Spindle Formation:
Spindle apparatus, made of microtubules, begins to form and attaches to chromosomes.
Centrioles: Organizing structures located at opposite poles of the cell in animal cells; absent in plant cells (plant cells use microtubule organizing centers).
Metaphase
Anaphase
Telophase
Decompaction of Chromosomes: Chromosomes begin to unwind back into chromatin.
Nuclear Envelope Reforms: Newly formed nuclei emerge around the chromatin.
Spindle Disassembly: The spindle apparatus is dismantled.
Cytokinesis: Physical division of the cytoplasm occurs, pinching off to form two separate daughter cells.
Differences in Plant Cells