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How Cells Divide
Chapter 9-10
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Cell Division
*growth and repair
*reproduction
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Cell Division
*divide contents of cell
*replicate genetic information
2 parts:
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Cell Division
parent cell
daughter cells
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Prokaryotic cells
Binary Fission
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Binary Fission
1. Replicate the genetic material
2. Divide the cell
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Cell Division
Eukaryotic Cells
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Eukaryotic Cells
Chromosomes
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Cell Division
1. Replicate the genetic material
2. Divide the cell
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Mitosis
*growth and repair
Eukaryotic Cells
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Meiosis*production of gametes
Eukaryotic Cells
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Cell Cycle
Interphase
Division (meiosis or mitosis)
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Mitosis
Inter-phase
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Human chromosomes
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Human chromosomes
23 pairs of chromosomes
46 chromosomes
haploid number
diploid number
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Human chromosomes
23 pairs
46 chromosomes
Homologous pair
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Homologous chromosomes
One from the egg
One from the sperm
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Homologous chromosomes
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Replicated chromosomes
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Cytokinesis in an animal cell
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Meiosis and Sexual Cycles
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Asexual reproduction
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Sexual Reproduction
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Sexual Reproduction
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Meiosisaka: reduction division
2nn
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Meiosisaka: reduction division
2nn
Gamete formation
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Meiosis
*replicate chromosomes
*two cell division phases
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Meiosis
ONE (1) 2n cell
FOUR (4) n cells
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Meiosis I
Prophase I metaphase I Anaphase I
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Meiosis Itelophase I
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Meiosis I
Prophase I
*Crossing over (= synapsis)
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*Crossing over (= synapsis)
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Meiosis I
Prophase I
*Crossing over (= synapsis)
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Meiosis IIProphase II metaphase II Anaphase II
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Meiosis IItelophase II cytokinesis
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MeiosisStart: diploid (2n)
End: haploid (1n)