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