Match the major events of mitosis with the stage in which the events occur. Answ

Question

Match the major events of mitosis with the stage in which the events occur. Answers may be used more than once.

1.Chromosome capture begins and chromosomes are jerked back and forth

2.Sister chromatids separate at the centromere

3.Mitotic spindle is fully formed

4.Early mitotic spindle forms Spindle apparatus disappears

5.Chromosomes are not yet visible;

6.DNA is in its long, stringy, uncoiled state

7.Nuclear envelope breaks apart

8.Cytoplasm and its contents divide in two

9.Centrosomes begin to move to opposite poles of the cell

10.Chromatin begins to coils and becomes compact, forming chromosomes

11.Duplicated chromosomes are aligned at the metaphase plate

12.Nuclear envelope reforms around daughter chromosomes

13.Two centrosomes have formed

14.Motor proteins begin to “walk” daughter chromosomes toward the centrosome

15.Two identical daughter cells are formed

A. Prophase B. Prometaphase C. Metaphase D. Gap phase 2 E. Telophase and Cytokinesis F. Anaphase

Place a letter to the appropiate event.

Explanation / Answer

A. Prophase: Chromosomes are not yet visible; Early mitotic spindle forms; Chromatin begins to coil and becomes compact, forming chromosomes;

B. Prometaphase: Nuclear envelope breaks apart;

C. Metaphase: Chromosome capture begins and chromosome are jerked back and forth; Mitotic spindle is fully formed; Duplicated chromosomes are aligned at the metaphase plate;

D. Gap Phase 2: Two centrosomes have formed

E Telophase and cytokinesis: Spindle apparatus disappears; Cytoplasm and its contents divide in two; Nuclear envelope reforms around daughter chromosomes; Two identical daughter cells are formed.

F. Anaphase: Sister chromatids separate at the centromere; Centromeres begin to move to the opposite pole of the cell; Motor proteins begin to “walk” daughter chromosomes toward the centrosome.

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