Which of the following is the best order of sequential, increasing condensation (packing) of DNA...

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Which of the following is the best order of sequential, increasing condensation (packing) of DNA
(a) nucleosome \( \rightarrow \) solenoid \( \rightarrow 30 \mathrm{~nm} \) fiber \( \rightarrow \) Loops on scaffold \( \rightarrow \) heterochromatin
(b) euchromatin \( \rightarrow \) solenoid \( \rightarrow 30 \mathrm{~nm} \) fiber \( \rightarrow \) nucleosomes
(c) nucleosomes \( \rightarrow 30 \mathrm{~nm} \) fibers \( \rightarrow \) euchromatin \( \rightarrow \) heterochromatin
(d) nucleosomes \( \rightarrow 30 \mathrm{~nm} \) fibers \( \rightarrow \) solenoid \( \rightarrow \) Loops on scaffold
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