Biology 1201A Lecture 4: Lecture-4-Notes
10 Dec 2015
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Mitosis and the eukaryotic cell cycle- lecture 4. During metaphase the microtubules penetrate the nuclear area and form the. During interphase the chromosomes will be duplicated in preparation for mitosis which divides the chromosomes and cytokinesis which divides the cell"s cytoplasm. In early prophase the duplicated chromosomes (consist of 2 sister chromatids joined at the centromere) began to condense. The two-way pulling of microtubules from both poles drags the chromosomes to the spindle equator. At this stage of mitosis, they are at their most condensed form. Finally, during anaphase, the sister chromatids of the chromosomes separate from each other and move to opposite poles. Telophase gets on their way once the chromosomes arrive at the spindle poles. The chromosomes decondensed and patches of new membrane fused to form two nuclear membranes. Now that cell division is complete, cells enter interphase. During the interphase, the chromosomes will be duplicated in preparation for the next round of mitosis.
