A) Chromosomes are composed of DNA and Protein. This statement is true. Chromosomes are made of chromatin, which is a complex of DNA tightly coiled around proteins called histones. B) Nucleus of a cell does not play a role in cellular reproduction. This statement is false. The nucleus contains the cell's genetic material (DNA organized into chromosomes), which is duplicated and segregated during cellular reproduction (mitosis or meiosis). The process of cell division is initiated and controlled by signals originating or processed within the nucleus or related to the nuclear contents. C) Chromosomes contain information for inheritance. This statement is true. Genes, the units of inheritance, are located on chromosomes. D) Functional segment of DNA is called genes. This statement is true. A gene is typically defined as a segment of DNA that carries the instructions for making a specific protein or functional RNA molecule, thus representing a functional unit of heredity. The statement that is not true is B.
Which of the following statements is not true?
Asked in UPPCS Prelims 2024 · Topic: Cell (Nucleus: Nuclear Envelope, Chromatin, Nucleolus, and Functions)
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Answer: B. Nucleus of a cell does not play a role in cellular reproduction.
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