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Biology
Cell Cycle and Cell Division
87 questions from 33 papers, each with its answer.
- 87 questions
- 33 papers
- 2.47% of Biology
Meiosis - Prophase I substages
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Which stage of meiosis can last for months or years in the oocytes of some vertebrates?In oocytes of some vertebrates, diplotene can last for months or years. This suspended diplotene stage is called the dictyotene state.
Mitosis - metaphase
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With respect to metaphase, which of the following statements is incorrect?Each metaphase chromosome is made up of two sister chromatids held together by the centromere, not four.
Crossing over
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In meiosis, crossing over and exchange of material between homologous chromosomes catalyzed by the enzyme:Crossing over, the exchange of genetic material between non-sister chromatids of homologous chromosomes during pachytene, is catalysed by the enzyme recombinase.
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