In S–phase, DNA is replicated in a medium containing radioactive thymidine. Radioactivity will be observed in:
1. Euchromatin
2. Heterochromatin
3. Both
4. Nucleolus
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAt which stage of the cell cycle does DNA replication occur:
1. G1 - phase
2. S - phase
3. G2 - phase
4. M - phase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe best material for the study of mitosis in the laboratory:
1. Anther
2. Root tip
3. Leaf tip
4. Ovary
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe cells of the quiescent centre are characterised by:
1. Having dense cytoplasm and prominent nuclei
2. Having light cytoplasm and small nuclei
3. Dividing regularly to add to the corpus
4. Dividing regularly to add to tunica
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIn the somatic cell cycle:
1. | DNA replication takes place in S-phase |
2. | A short interphase is followed by a long mitotic phase |
3. | \(G_2\) phase follows the mitotic phase |
4. | In the \(G_1\) phase, DNA content is double the amount of DNA present in the original cell |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyAt what stage of the cell cycle are histone proteins synthesized in a eukaryotic cell:
1. During telophase
2. During S-phase
3. During the G-2 stage of prophase
4. During the entire prophase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology