Question

Q. 8. How does the organization of DNA change its arrangement during cell division?​

Answer 1

Answer:

the long strands of DNA are condensed into compact chromosomes. ... This nucleosome is linked to the next one with the help of a linker DNA. This is also known as the “beads on a string” structure. This is further compacted into a 30 nm fiber, which is the diameter of the structure.

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Answer 2

Answer:

• Double-stranded DNA wraps around histone proteins to form nucleosomes that have the appearance of “beads on a string.” The nucleosomes are coiled into a 30-nm chromatin fiber. When a cell undergoes mitosis, the duplicated chromosomes condense even further. DNA replicates in the S phase of interphase.