How many nucleosomes are found in helical coil of 30 nm chromatin fibre ____?
Correct answer: C. 06
- A. 10
- B. 12
- C. 06
- D. 09
Explanation
In the traditional solenoid model of the 30 nm chromatin fibre, six nucleosomes are arranged in one helical turn. Therefore the expected number is 6 nucleosomes, written as 06 in option c. Students may choose 10 or 12 by confusing the 30 nm fibre with another level of chromatin packing or with a different model.
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