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Chromosomes and chromatin

Biology • DNA Structure & Replication • Knowledge-Based • 1 questions

Chromosomes and chromatin Knowledge-Based Download PDF

Biology · Molecular Genetics · Biology · DNA Structure & Replication

1 Biology practice questions on Chromosomes and chromatin. Questions that assess core concepts and understanding.

Questions

  1. 1.

    Which statement correctly describes the structural organization of a eukaryotic nucleosome core particle?

    • A) It consists of a loop of double-stranded DNA wrapped around a core of acidic non-histone scaffold proteins.
    • B) It forms exclusively during metaphase to facilitate the rapid separation of sister chromatids along the spindle apparatus.
    • C) It consists of approximately 146 to 147 base pairs of DNA wrapped around an octamer composed of two copies each of histones H2A, H2B, H3, and H4.
    • D) It contains a central core formed by histone H1 that encloses two parallel DNA duplexes within its interior channel.