Question

Choose the correct order with respect to DNA packaging in eukaryotes.

• A. DNA $\to$ Chromatin $\to$ Nucleosome $\to$ Chromosome
• B. DNA $\to$ Nucleosome $\to$ Nucleotide $\to$ Chromosome
• C. DNA $\to$ Nucleotide $\to$ Nucleoside $\to$ Chromosome
• D. DNA $\to$ Nucleosome $\to$ Chromatin $\to$ Chromosome

Answer 1

The correct option is D DNA $\to$ Nucleosome $\to$ Chromatin $\to$ Chromosome

In eukaryotes, the packaging of DNA inside the nucleus is very complex. The negatively charged DNA is wrapped around the positively charged histone octamer to form a structure called nucleosome. Nucleosomes in turn form the repeating unit called chromatin which are thread-like stained bodies. Later, the chromatin fibres are further coiled and condensed to form chromosomes. Hence, the correct order is DNA $\to$ Nucleosome $\to$ Chromatin $\to$ Chromosome.