biology a level help Watch

The-Deadly
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can someone help me with all of number 3?Name:  image.png
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kate416
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Root tips are used because the roots are easy to grow in large numbers, the cells at the tip of the roots are actively dividing so a lot of cellswill be in stages of mitosis, the tips can be prepared in a way that allows them to be squashed so that the chromosomes of individualcells can be observed, the chromosomes can be stained to make them more easily observable.
That pretty much covers a) I think??
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