Chapter 12

Chapter 12 - Chapter 12: The Cell Cycle How genetic...

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Chapter 12: The Cell Cycle How genetic information is transmitted to daughter cells: There are various phases in the cell cycle. Interphase: G1 -growth S -when chromosomes replicate G2 -growth and preparation for division Mitosis: (When chromosomes go to daughter cells) Sends one set of genetic information to each daughter cell. Chromosomes also condense and eventually separate. Prophase: ‘before’ phase. Two sister chromatids are held together at the centromere. Separating centrosomes will form the spindle poles. Prometaphase: The nuclear envelope begins to break down and the spindle poles begin to go to each end of the cell. Metaphase : Chromosomes will begin to move to the metaphase plate, halfway between the poles. Anaphase : Separation of sister chromatids by their kineticores begins. The kinetochore microtubule shortens as the chromatid is pulled towards the pole. An increased separation of the spindle poles occur. The chromosomes are pulled by an ATP driven microtubule motor protein. As the kinetochore is
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Chapter 12 - Chapter 12: The Cell Cycle How genetic...

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