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Explain the Term Pachytene - Biology

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प्रश्न

Explain the Term Pachytene

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उत्तर

Pachytene: The crossing-over begins at the end of this stage.

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पाठ 1: Cell Division - Explain the Terms

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आईसीएसई Biology [English] Class 10
पाठ 1 Cell Division
Explain the Terms | Q 3

व्हिडिओ ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्‍न

The diagram given below represents a certain stage of mitosis: 

  1. Identify the stage of cell division.
  2. Name the parts labelled A and B.
  3. What is the unique feature observed in this stage?
  4. How many daughter cells are formed from this type of cell division?

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.

 

  1. Identify the stage. Give one reason in support of your answer.
  2. Name the cell organelle that forms the ‘aster’.
  3. Name the parts labelled 1, 2 and 3.
  4. Name the stage that follows the one shown above; how is that stage identified?
  5. Mention two differences between mitosis and meiosis with regards to:
    1. The number of daughter cells produced.
    2. The chromosome number in the daughter cells.

Genetic recombination occurs in ______ phase of prophase of meiosis-I.


Fill in the blank and explain the statement.

All chromosomes are arranged parallel to equatorial plane of cell in ______ phase of mitosis.


Fill in the blank and explain the statement.

For formation of plasma membrane, ____________ molecules are necessary.


Describe anaphase in mitosis.


How is mitosis important?

Mention characteristic features of mitosis.

Give important characters of meiosis.

Fill in the blank:

______ is the indirect cell division.


What happens to chromatin during prophase and metaphase of mitosis?

In which one of the following options the two stages of mitosis have been given in correct sequence?


The figure below shows a certain stage of mitosis:

(i) Name the stage,
(ii) Label the parts 1 to 4
(iii) How many chromosomes are shown here?


Name the following:

Mitosis takes place in which cells.


Give Technical Terms

Division of nucleus.


Multiple Choice Question:

Karyokinesis is the division of


In which stage of mitosis the chromosomes align in an equatorial plate? How?


During Mitosis what is the position of chromatids in metaphase?


During Mitosis what is the position of chromatids in the anaphase?


The phase of karyokinesis which is almost the reverse of prophase is ______.


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