In a cell that is not dividing, the chromosomes are visible as a network of fine threads called:

Microtubules

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Chromatin

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Microfilaments

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None of the above

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Solution

The correct option is B Chromatin
In a nondividing cell, the genetic material, i.e., DNA is present as chromatin fibres. Chromosomes are visible only during certain stages of cell division. Chromosomes are formed by coiling and supercoiling of chromatin fibres. Histone proteins are basic in nature and help in coiling of DNA. Chromosomes are most clearly visible during metaphase stage of mitotic cell division. Once cell division is over, the chromosomes uncoil back into chromatin fibres.
So, the correct answer is option B.

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Similar questions

Chromosomes become visible as fine long threads during

Column 'A'	Column'B'
(a) Chromosomes get in a horizontal plane at the equator	Anaphase
(b) Daughter chromosomes move to the opposite poles of a spindle	Prophase
(c) Chromosomes become visible as fine long threads	Telophase
(d) Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network	Metaphase

Column 'A'	Column 'B'
(a) Chromosomes get arranged in a horizontal plane at the equator.	1.Anaphase
(b) Daughter chromosomes move to the opposite poles of a spindle.	2. Prophase
(c) Chromosomes become visible as fine long threads.	3. Telophase
(d) Chromosomes lose their distinctiveness and gradually become transformed into a chromatin network	4. Metaphase

The cells that contain a double set of chromosomes are called __ cells.

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