This is a draft cheat sheet. It is a work in progress and is not finished yet.
Cell Cycle
Zygote Grows untill large enough for cell division, it divides into Progeny Cells |
Progeny Cell |
Cell Growth |
Cell Division |
Sequence of Cell Division
Cell Cycle Before Mitosiis
Growth 1 |
Replication Phase |
Growth 2 |
Now ready for Mitosis |
Growth 1
Longest Phase |
Most growth in cell size |
Replication
DNA in cell nucleus are copied |
2 Identical sets of DNA |
Growh 2
Cell keeps growing |
Untill Ready for Mitosis |
Interphase
Growth 1, Replication Phase, Growth 2 |
These 3 stages together are refered to as |
Interphase |
Mitosis
Mitosis is cell division that produces genetically identical cells |
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Chromosomes
DNA molecules attached to protiens strutures |
DNA
Interphase |
DNA is long thin strands |
Mitosis |
DNA tightly coiled chromosomes become more visable |
Glossary
Autosomes |
Chromosomes other than a sex chromosome |
Diploid |
Diploid cells where autosomes have a partners |
Centromere |
Point of attachment of replicated chromosomes |
Chromatids |
Repliciated DNA pair |
Cytoplasm |
Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane |
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Mitosis 4 Divisions
Prophase |
Metaphase |
Anaphase |
Teleophase |
Think PMAT for Mitosis Stages
Chromatids are double the number of chromosomes
46 chromosomes for humans |
23 pairs of chromosomes for humans |
46 Chromatids at start of mitosis |
Prophase
Membrane surrounding Chromosomes disappears |
Cell no longer has a nucleus |
Chromosomes have identical Chromatids joined at centromere |
Metaphase
Chromosomes line up along the middle of the cell |
Become attached by centromeres |
By spindle fibres |
Anaphase
Chromatids now seperate |
Spindles pull chromatids to opposite ends of the cell |
Chromatids are now chromosomes |
Telophase
Chromosomes at opposite ends uncoil |
Nuclear envelope forms arround each group |
Two Nuclei |
Cytoplasm Divides |
Now 2 Daughter cells |
Genetically Identical |
Daughter cells start the Cell cycle |
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