Internal and external cues help regulate the cell cycle

Internal and external cues help regulate the cell cycle -...

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Internal and external cues help regulate the cell cycle. Research scientists are currently working out the pathways that link signals originating inside  or outside the cell with responses by cyclin-dependent kinases and other proteins. Scientists do not yet know what Cdks actually do in most cases. Some steps in the signaling pathways that regulate the cell cycle are clear, however. The M phase checkpoint ensures that the kinetochores of all the chromosomes are attached to  the spindle at the metaphase plate before anaphase. This ensures that daughter cells do not end up with missing or extra chromosomes. A variety of external chemical and physical factors can influence cell division. For example, cells fail to divide if an essential nutrient is left out of the culture medium.
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Internal and external cues help regulate the cell cycle -...

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