Question

The diagram given below represents a stage during mitotic cell divisions in an animal cell:

(i) Identify the stage. Give a reason to support your answer. 

(ii) Name the parts labelled 1, 2 and 3. 

(iii) What is the chromosome number of the cell ? 

(iv) Draw a neat, labelled diagram of the cell as it would appear in the next stage. Name the stage.

Answer 1

(i) This diagram represents ‘anaphase’ of the mitosis division. In this centromere is divided separating sister chromatids of each chromosome. They are now drawn apart towards opposite poles. 

(ii) Parts labelled 1 —> aster rays. Parts labelled 2 —> spindle fibres. Parts labelled 3 —> chromatids. 

(iii) 4 Chromosomes. Just double of the parent cell. 

(iv) Stage: Telophase.