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In Mitosis, after the chromosomes are copied...
mitosis distributes one chromosome copy to each of two daughter cells
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What do mitosis and cytokinesis produce?
2 cells that are identical to the parent cell
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what are the 4 phases that eukaryotic cells go through?
-G1
-S
-G2
-M
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What is mitosis?
division of genetic material in nucleus that produces daughter cells genetically identical to the parent cell
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What is cytokinesis?
the division of the cytoplasm into the 2 daughter cells
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what 3 things can Mitosis go through?
-growth
-wound repair
-cellular respiration
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Asexual reproduction AND mitosis
-asexual reproduction is the basis of mitosis
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What is mitosis only involved in?
production of somatic (body) cells
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Mitos (2)
-thread
-refers to the condensed chromosomes that become evident when a cell is undergoing mitosis
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the two strands on top have identical DNA
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preparationo of experiment to find out how long S phase
-fed radioactive thymidine to cells
-then waited for hours to see where the cells where
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(experiment/thymidine) In the beginning where is the only place where cells have thymidine?
in S phase
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(experiment/thymidine) why was thymidine incorporated only in these 3 cells in S phase?
These cells were going through DNA synthesis which is the only time which cells can incorporate things in their DNA
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(experiment/thymidine) In the beginning would adenosine or cytosine give the same pattern?
no, they would be present in all the other cells except mitosis because they can be read by RNA
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(experiment/thymidine) After 5 mins, are there cells that are going through mitosis and have thymidine?
no
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(experiment/thymidine) After two hours, are there cells that are going through mitosis and have thymidine?
no
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(experiment/thymidine) After 4 hours, are there cells that are going through mitosis and have thymidine?
no
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(experiment/thymidine) After 6 hours, are tehre cells taht are going through mitosis and have thymidine?
yes
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(experiment/thymidine) After 8 hours, are there cells that are going through mitosis and ahve thymidine?
yes
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(experiment/thymidine) After 10 hours, are there cells that are going through mitosis and have thymidine
yes
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(experiment/thymidine) After 12 hours, are there cells that are going through mitosis and have thymidine?
no
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(experiment/thymidine) How long is S-phase?
8 hours long
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(experiment/thymidine) What was the conclusion of the experiment?
-S-phase is 8 hours long
- -there is a gap between S phase and M phase
- *G1 and G2
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Does a 4 unreplicated chromosomes have same amount of DNA than 4 replicated chromosomes?
no, the 4 replicated chromosomes have twice the DNA
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How does a G1 cell look like?
-has 4 unreplicated chromosomes
 (the one in left)
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How do chromosomes look like in S phase and G2?
-has 4 replicated chromosomes
(the one in right)
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(4)
-replicacted chromosomes condense at start of mitosis
-during mitosis, sister chromatids separate
-2 daughter cells are formed by citokinesis
-parent cell has twice as muhc of DNA than one daughter cell
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What is a single strand called?
chromatid
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What are sister chromatids?
two single strands put together
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