The coiling of chromonema in the prophase of mitosis is

Plectonemic

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Paranemic

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Helical

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lrregular

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Solution

The correct option is B Plectonemic
The coiling of chromonema in prophase of mitosis is plectonemic. Plectonemic means the double strands of the DNA are coiled together to form the supercoils. DNA supercoiling help in the DNA packaging within the nucleus of the cells because the length of DNA is more longer and cannot fit within the cell. Supercoiling of DNA reduces the space and allows complete DNA to be packaged. In prokaryotes, plectonemic supercoils occur, because the genetic material is a small circular chromosome.
Thus, the correct answer is option A.

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Similar questions

Q. Chromosome is most coiled at (in mitosis)
(a) telophase
(b) anaphase
(c) metaphase
(d) prophase

Q. Explain what happens in prophase stage of mitosis.

Prophase-I of meiosis is of longer duration than prophase of mitosis.

Q. Which phase of mitosis is essentially the reverse of prophase in terms of nuclear changes?

In which one of the following options the stages of mitosis have been given in correct sequence ?
(a) Prophase, metaphase, telophase, anaphase
(b) Prophase, metaphase, anaphase, telophase
(c) Anaphase, telophase, prophase, metaphase
(d) Telophase, anaphase, prophase, metaphase

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