Question

Why are onion root tips a good choice for viewing cells in different stages of the cell cycle?

Answer 1

They are a good choice because at any given time, you can find cells that are undergoing mitosis.

Answer 2

The onion root tips are good for observing cells in different stages of cell cycle as they comprise of different cells in different stages of growth and development.

• The onion root tip is an actively growing region of the onion plant.
• The cells are expected to be in different stages of growth and maturation.
• The cells are in different stages of mitosis which can be observed microscopically.
• The onion root tip can be prepared for microscopic examination by squashing and flattening of the onion root tip.
• The chromosomes during different stages of mitosis can be observed by using staining with specific dyes like Feulgen stain and Acetocarmine stain.

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