Cell division

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maraldy
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Cell division

Post by maraldy » Sat Dec 03, 2005 10:24 pm

What happens to the DNA in cells prior to cell division???

Thanks, Mara

starstruck17
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Post by starstruck17 » Sat Dec 03, 2005 11:42 pm

the dna replicates and condences, all the chromatids align on the equator, then the sister chromatids separate into chromosomes and then the cell divides

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Post by th1_rhs13 » Sun Dec 04, 2005 12:41 am

A phase known as interphase.

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MrMistery
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Post by MrMistery » Sun Dec 04, 2005 10:55 am

@starstruck17
From what you said, only the replication of DNA occurs in interphase, the rest occur during cell division..
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Post by Ilyaas » Sun Dec 04, 2005 11:39 am

Cell division

prophase-DNA condenses into two sister chromatids and nuclear membrane disintegrates
Metaphase-DNA lines up on the equator of the cell and attatched to spindle
Anaphase-Sister chromatids pulled apart and travel to opposite ends of the cell
Telophase-DNA uncoils and and nuclear membranes form around both sets of DNA and shortly after Cytokinesis occurs

correct? if not let me know

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MrMistery
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Post by MrMistery » Sun Dec 04, 2005 11:41 am

A very good summary... For details read a book :)
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Post by smarty » Mon Dec 05, 2005 5:39 pm

How many chromatids are present?????

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Post by sdekivit » Mon Dec 05, 2005 8:07 pm

MrMistery wrote:A very good summary... For details read a book :)


regulation of the cell cycle is far more interesting :roll:

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Post by MrMistery » Tue Dec 06, 2005 8:26 pm

Agreed. But not everyone would find it that way. Also there are few countries that study all those kinases etc at the cell cycle in high-school. It is good to start with babysteps...
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter

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