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If you are provided with root-tips of onion in your class and are asked to count the chromosomes, which of the following stages can you most conveniently look into?

1. Metaphase
2. Telophase
3. Anaphase
4. Prophase

Correct answer: Metaphase

Solution

Metaphase is best for chromosome counting because chromosomes are maximally condensed and arranged on the equatorial plate, making them distinct and easy to observe. In other stages, chromosomes are either not fully condensed or are separating, which makes counting difficult.

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