VIRTUAL BIOLOGY LAB · LAB 23

🧬 Meiosis: Division Explorer

Visualise reduction division and crossing over during meiosis.

CBSE Classes 11–12Interactive practicalDrag & drop challengeStudent notebook

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🔎 Learning objective

Visualise reduction division and crossing over during meiosis.

3Hands-on matches

1Knowledge check

🧬 Interactive laboratory workspace

Explore the biological idea using the model controls. This is a conceptual classroom simulation.

🧬

Meiosis: Division Explorer

Meiosis halves chromosome number and contributes to genetic variation.

PRACTICAL WORKBENCH · EXPERIMENT 23

🧪 Chromosome observation station: Track chromosome behaviour through meiosis

Meiosis reduces chromosome number and generates genetic variation.

Ready to begin

APPARATUS & EXPERIMENT CONTROLS

01 · Set up apparatus02 · Adjust variables03 · Run trial04 · Record reading

Stage Homologous pairing Crossing-over

◉Chromosome state▤

OBSERVATION & MEASUREMENTS

Stage—

Homologous pairing—

Crossing-over—

Outcome—Awaiting run

Meiosis reduces chromosome number and generates genetic variation.

Scientific interpretation will appear after the trial.

Scientific note: Advance through meiosis I and II and observe pairing, separation and haploid products.

Model conditionObservation focus

Model ready. Choose a condition and run the model to see an observation.

🧪 Hands-on drag & drop challenge

PRACTICAL SKILL BUILDER

Drag each item from the tray to its correct destination. On a phone or tablet, tap an item and then tap its destination. Complete all three matches to finish.

🧰 MATERIALS & CONCEPTS

🎯 DROP ZONES

Choose an item and place it in the matching zone.

📓 Observation notebook

Record your observation and export it for revision.

Key concept: Meiosis halves chromosome number and contributes to genetic variation.

🎯 Quick knowledge check

Crossing over occurs during:

Select one answer to check your understanding.

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