The Cell Cycle & Cell Division
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1 The Cell Cycle & Cell Division
2 The Cell Cycle
3 Animated Cycle
4 MITOSIS
5 Mitosis The process of cell division which results in the production of two daughter cells from a single parent cell. The daughter cells are identical to one another and to the original parent cell.
6 Mitosis can be divided into stages Interphase Prophase Metaphase Anaphase Telophase & Cytokinesis
7 Interphase The cell prepares for division Animal Cell DNA replicated Organelles replicated Cell increases in size Plant Cell DNA replicated Organelles replicated Cell increases in size
8 Interphase Animal Cell Plant Cell Photographs from:
9 Prophase The cell prepares for nuclear division Animal Cell Packages DNA into chromosomes Plant cell Packages DNA into chromosomes
10 Prophase Animal Cell Plant Cell Photographs from:
11 Metaphase The cell prepares chromosomes for Animal Cell Chromosomes line up at the center of the cell Spindle fibers attach from daughter cells to chromosomes at the centromere division Plant Cell Chromosomes line up at the center of the cell Spindle fibers attach from daughter cells to chromosomes at the centromere
12 Metaphase Animal Cell Plant Cell Photographs from:
13 Anaphase The chromosomes divide Animal Cell Spindle fibers pull chromosomes apart ½ of each chromosome (called chromotid) moves to each daughter cell Plant Cell Spindle fibers pull chromosomes apart ½ of each chromosome (called chromotid) moves to each daughter cell
14 Anaphase Animal Cell Plant Cell Photographs from:
15 Telophase The cytoplasm divides Animal Cell DNA spreads out 2 nuclei form Cell wall pinches in to form the 2 new daughter cells Plant Cell DNA spreads out 2 nuclei form New cell wall forms between to nuclei to form the 2 new daughter cells
16 Telophase Animal Cell Plant Cell Photographs from:
17 Mitosis Animation
18 Animal Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase
19 Plant Mitosis -- Review Interphase Prophase Metaphase Anaphase Telophase Interphase
20 MEIOSIS
21 Meiosis Meiosis is the type of cell division by which germ cells (eggs and sperm) are produced. One parent cell produces four daughter cells. Daughter cells have half the number of chromosomes found in the original parent cell
22 Meiosis During meiosis, DNA replicates once, but the nucleus divides twice.
23 Meiosis Four stages can be described for each division of the nucleus.
24 Meiosis I First division of meiosis
25 First Division of Meiosis Prophase 1: Each chromosome duplicates and remains closely associated. These are called sister chromatids. Metaphase 1: Chromosomes align at the center of the cell. Anaphase 1: Chromosome pairs separate with sister chromatids remaining together. Telophase 1: Two daughter cells are formed with each daughter containing only one chromosome of the chromosome pair.
26 Prophase I
27 Prophase I
28 Metaphase I
29 Telophase I
30 Meiosis Second Division of Meiosis
31 Second Division of Meiosis Prophase 2: DNA does not replicate. Metaphase 2: Chromosomes line up at the center of the cell Anaphase 2: Centromeres divide and sister chromatids move separately to each pole. Telophase 2: Cell division is complete. Four haploid daughter cells are formed.
32 Prophase II
33 Metaphase II
34 Telophase II
35 Meiosis
36 Meiosis Animation
37 Differences in Mitosis & Meiosis Mitosis Asexual Cell divides once Two daughter cells Genetic information is identical Meiosis Sexual Cell divides twice Four haploid daughter cells Genetic information is different
38 Comparison Animations genetics/sciber/animatin.htm
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