Question

Choose the increasing sequence for the DNA packaging in a cell: (A) DNA
(B) Chromosome
(C) Chromatin
(D) Nucleosome
Choose the correct answer from the options given below:

• A. (B), (A), (C), (D)
• B. (A), (D), (C), (B)
• C. (B), (A), (D), (C)
• D. (A), (B), (D), (C)

Hint:

DNA is packaged into nucleosomes, which further condense to form chromatin, and during cell division, chromatin condenses into chromosomes.

Answer 1

The Correct Option is D

Step 1: Understanding the DNA Packaging Process.
The packaging of DNA in a cell is a highly organized process, where DNA is packed into a series of structures:
- DNA (A): DNA is the genetic material in cells, which is tightly coiled to fit into the cell's nucleus.
- Nucleosome (D): DNA wraps around histone proteins to form nucleosomes, which resemble beads on a string.
- Chromatin (C): Nucleosomes further fold to form chromatin, a complex of DNA and proteins that makes up chromosomes.
- Chromosome (B): Chromatin further condenses during cell division to form visible chromosomes, which carry the genetic information.
Step 2: Conclusion.
The correct sequence for DNA packaging from smallest to largest structure is DNA → Nucleosome → Chromatin → Chromosome.
Final Answer: \[ \boxed{\text{The correct answer is (4) (A), (B), (D), (C).}} \]