Genetics concepts

a) Explain how many kinetochores are there within the human cell at mitosis?
b) Surprise, your boss has invited himself or herself to dinner! All you have is some wilted, day old lettuce. You vaguely recall from your Cell Biology Class at the Saint Joseph College that this Zito guy teaching the course made you read around a trick to rejuvenating wilted lettuce. Could you soak your lettuce within the salt water, in tap water, or in the sugar water or maybe just shine a bright light on it and hope that the photosynthesis will perk it up?  Justify your answer.

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