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| Cell performs its usual functions, includes G1, S, G2 |
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| Cell increases in size, doubles its organnells,recovers from last division "Growth" |
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DNA Synthesis
Beginning of S- Each chromosome is composed of two identical DNA,at the end, each chromosome is composed of two identical DNA doble Helix molecules called sister chromatids |
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| DNA replication complete, cell synthesizes proteins for mitosis |
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1) Cell division(nuclear division)
2)division of cytoplasm |
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Progammed Cell death in
G1 if Dna cannot be repaired
G2 id dna hasnt replicated right
Metaphase if chrom. are not aligned right
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| Eukaryotic Cell, when its not ndergoing division, dna is tangled chromatin |
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1Diploid number full set of chromosomes
2)haploid number, one set of chrom. 23 for humans, sperm and eggs have this |
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| divides to produce daughter nuclei that is also 2n |
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sister chromatids
centromere |
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each double helix is a chromatid and two identical chromatids are called sistrs
connect the sister chromatids |
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| How many cells does mitosis produce? |
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Main microtubule organizing center,has centroles in animals, but not in plants, also organizes spindles
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Centrosomes duplicated
nuclear envelope disapears
chromatin condenses into chromosomes
Spindles form
centrosomes move apart
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| things start moving apart, (late prophase) |
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| Centromeres of dupicated chromosomes are aligned at the metaphase plate, spindles move to the cell poles |
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| Sister chromatids part and become daughter chromatids and move towards spindle poles |
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| Daughter cells are forming and nuclear envolopes reappear, chromsomnes will become indistinct chromatin |
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