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प्रश्न
The diagram given below represents a certain stage of mitosis:
- Identify the stage of cell division.
- Name the parts labelled A and B.
- What is the unique feature observed in this stage?
- How many daughter cells are formed from this type of cell division?
उत्तर
- Anaphase
- A - Spindle fibre, B - Centromere
- During this stage (anaphase), the two sister chromatids of each chromosome separate and are drawn towards the opposite poles because of the shortening of spindle fibres.
- This type of cell division (mitosis) results in the formation of two daughter cells.
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संबंधित प्रश्न
Given below is a diagram representing a stage during mitotic cell division in an animal cell Examine it carefully and answer the questions which follow.
- Identify the stage. Give one reason in support of your answer.
- Name the cell organelle that forms the ‘aster’.
- Name the parts labelled 1, 2 and 3.
- Name the stage that follows the one shown above; how is that stage identified?
- Mention two differences between mitosis and meiosis with regards to:
- The number of daughter cells produced.
- The chromosome number in the daughter cells.
Fill in the blank and explain the statement.
For formation of plasma membrane, ____________ molecules are necessary.
With the help of suitable diagrams, explain the five stages of prophase-I of meiosis.
Draw a labeled schematic representation of mitosis cell division.
Explain the Term Pachytene
The karyotype (set of chromosomes) shown below is taken from a dividing cell in a certain individual.
(i) Is the individual male or female? Explain your answer.
(ii) How would you expect
(a) a female cell and
(b) sperm cell to differ in chromosome composition?
The diagram given below represents a stage in mitosis.
- Identify the stage given above.
- Give one reason to support your answer in (a).
- Mention the number of chromosomes given in the diagram.
During Mitosis what is the position of chromatids in metaphase?
During Mitosis what is the position of chromatids in the anaphase?
