Question

Identify the correct sequence of condensation of DNA into a chromosome.
(A) DNA double helix → Nucleosome -> Solenoid fibre → Chromosome
(B) Nucleosome → DNA double helix > Chromosome → Solenoid fibre
(C) Solenoid fibre
DNA double helix -> Nucleosome > Chromosome
(D) DNA double helix → Chromosome → Solenoid fibre → Nucleosome​

Answer 1

Answer:

A

Explanation:

Order of packaging is

DNA --> Histone octamer --> Nucleosome -->6 Nucleosome --> solenoid -->7 solenoid -->30nm fibre --> Chromatin -->protein scaffold /nuclear matrix --> radial loops --> packaging --> chromosome

HOPE ITS HELP YOU.....

Answer 2

The correct sequence of condensation of DNA into a chromosome is (B) Nucleosome → DNA double helix > Chromosome → Solenoid fibre.

Explanation for the answer:

• The process of condensing of DNA molecules in vitro or in vivo is referred to as a process of DNA condensation.
• It starts during prophase (2) where chromosomes are visible.
• Then, these chromosome remains condensed throughout the various stages of mitosis (2-5).
• Hence, the correct answer among all the options is option (B) Nucleosome → DNA double helix > Chromosome → Solenoid fibre.

(#SPJ3)