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Molecular Basis of Inheritance question

2022 · Q21
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Molecular Basis of Inheritance question

2022 · Q21

NEETBiologyMolecular Basis of InheritanceMCQ+4 / −1

Read the following statements and choose the set of correct statements:

(a) Euchromatin is loosely packed chromatin

(b) Heterochromatin is transcriptionally active

(c) Histone octamer is wrapped by negatively charged DNA in nucleosome

(d) Histones are rich in lysine and arginine

(e) A typical nucleosome contains 400 bp of DNA helix

Choose the correct answer from the options given below :

  1. A
    (b), (d), (e) only
  2. B
    (a), (c), (d) only
  3. C
    (b), (e) only
  4. D
    (a), (c), (e) only
View written solutionFree

Correct answer: B

Heterochromatin is transcriptionally inactive. A typical nucleosome contains 200 bp of DNA helix.

Euchromatin is the loosely packed chromatin region.

The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome. Histones are rich in basic amino acid residues lysine and arginine.

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