Mitosis and Cytokinesis. Section 5.2. Objectives. SWBAT describe the structure of a chromosome. SWBAT follow chromosomes through the processes of mitosis and cytokinesis. Vocabulary. Chromosome Histone Chromatin Chromatid Centromere Telomere Prophase Metaphase Anaphase Telophase .
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What does diploid mean?
What does haploid mean?
Chromatin condenses into tightly coiled chromosomes (two sister chromatids).
The nuclear membrane breaks down and the nucleolus disappears.
The centrioles and centrosomes migrate to opposite sides of the cell – producing spindle fibers (microtubules).
Spindle fibers attached to protein structure on the centromere of each chromosome.
The chromosomes are aligned along the equator of the cell.
The sister chromatids are separated as the spindle fibers shorten - pulling them apart.
A complete set of identical chromosomes are now in the developing daughter cells.
The nuclear envelope begins to appear.
The chromosomes uncoil and become spaghetti-like again.
The daughter cells complete cytokinesis and separate completely.