Mitosis Worksheet Name: __________________________________ Student #: ____________ 1.2 Mitosis and asexual reproduction require one parent 1.2.1 Mitosis 1. Label the following diagram of mitosis of an animal cell. Interphase Metaphase Prophase Centrioles Chromosomes Spindle Fibers Telophase Anaphase 2. During which stage of a cell’s cycle do the replicated chromosomes thicken and Prophase become visible? ______________________ 3. In animal cells, which structure is thought to produce the spindle fibers that help Centrioles separate the sister chromatids during anaphase? ______________________ No 4. Is this structure found in plant cells? __________ 5. The drawing below has been made from a photograph showing a cell undergoing mitosis. Based on the drawing, in what stage of mitosis must the cell have been in? Anaphase ______________________ 6. The drawings A-E show stages of mitosis in an plant cell. (a) Which of the drawings A -E shows (i) interphase ________ (DNA is replicated) C (ii) B prophase ________ (chromosomes – 2 sister chromatids – shorten) (iii) metaphase ________ (sister chromatids line up) E A (iv) anaphase ________ (sister chromatids separate) (v) D telophase ________ (new nucleus forms at each end) D (vi) cytokinesis ________ (cell contents divided between 2 daughter cells) (b) Give two processes which occur during interphase and which are necessary for nuclear division to take place. Replication ____________________ of the cell and ____________________ of the DNA Growth 7. This drawings shows various stages of mitosis in a fast growing onion root tip. Identify the cells (by number) which are in the following stages of mitosis: interphase 4, 5, 6, 8, 10, 13, 15, 16, 18 _____________ prophase _____________ 2, 14 metaphase _____________ 11, 17 anaphase 7, 9 _____________ telophase _____________ 3, 12 8. Using colored pens or pencils, show how 2 chromosomes are passed from mother cell to two daughter cells. 9. Now answer 1.2.1 Review Questions #1, 3, 6, 7, 10 and 11 on pages 25-26.

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