NEET Biology Principle Of Inheritance And Variation Question Bank Critical Thinking

  • question_answer
    How many nucleosomes are found in helical coil of 30 nm chromatin fibre [RPMT PMT 2000]

    A) 10

    B) 12

    C) 06

    D) 09

    Correct Answer: C

    Solution :

    According to Radial loop model. Each chromosome has one or two interconnected scaffolds made of non-histone chromosomal proteins. The scaffold bears a large member of lateral loop all over it. Each lateral loop is 30 nm thick fibre similar to chromatin fibre. It develops through solenoid coiling of nucleosome chain with about six nucleosomes per turn.


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