Biology · Class 11 · Chapter 10

Cell Cycle and Cell Division

13 lessons96 min5 simulations10 practice questions

Every organism, however large, begins as one cell, and it grows by cells dividing again and again. This chapter follows one round of that process, the cell cycle: a long interphase of growth and DNA copying (G1, S, G2), then the M phase in which mitosis shares identical chromosome sets between two daughter cells. It then turns to meiosis, the special two-step division that halves the chromosome number to make gametes, walks through the five sub-stages of prophase I where homologues pair and cross over, and closes with why both kinds of division matter.

Also called: mitosis and meiosis · cell division · cell cycle

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Lessons

13 lessons · 96 min

01The cell cycle and its phasesNCERT §10.16 min 02Interphase: G1, S and G2NCERT §10.1.19 min1 sim 03Quiescent stage and which cells divideNCERT §10.1.15 min 04Prophase and metaphaseNCERT §10.2.1–10.2.29 min1 sim 05Anaphase and telophaseNCERT §10.2.3–10.2.45 min 06CytokinesisNCERT §10.2.55 min 07Significance of mitosisNCERT §10.35 min 08Meiosis and its key featuresNCERT §10.45 min 09Prophase INCERT §10.4.113 min2 sims 10Metaphase I to interkinesisNCERT §10.4.15 min 11Meiosis IINCERT §10.4.29 min1 sim 12Significance of meiosisNCERT §10.55 min 13Chapter reviewMust-know facts, traps and formulas15 min

Simulations

5 in this chapter

The cell cycle clockIn: Interphase: G1, S and G2 The spindle checkpointIn: Prophase and metaphase Crossing over: when does it make something new?In: Prophase I Prophase I, stage by stageIn: Prophase I Count the chromosomes and the DNAIn: Meiosis II