Cell Division 7 th grade. Cell Division Animal Cell Plant Cell Photographs from: .
Cell Division
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Transcript of Cell Division
Cell Division
Reason
Cells are limited in size!
So the only way to grow is to make more cells
Repair damaged cells
55
The Process
58
1. Interphase
Cell growth
Copy of genetic material – DNA
Preparation of division
56
2. MitosisCell separates DNA
DNA Structure
Chromosomes – Specific clumps of DNA
Humans have 23 pairs
Copied form of DNA (each called chromatid)
Held together by centromere
Ends called telomeres
57
2. Mitosis
Prophase
59
2. Mitosis
Metaphase
59
2. Mitosis
Anaphase
58
2. Mitosis
Telophase
58
3. Cytokinesis
Cell separates
58
3. Cytokinesis
60
Cell Cycle
60
Human Liver Cell1.What are curved
arrows?2.What stage of cell
cycle is growth?3.How long does
replication occur?4.What stage takes
the most time?
Meiosis
Reproductive cell division
92
Meiosis Process
94Males – Females -
Line up of Genes
96