Barr body is found in the cytoplasm during
1. interphase in cell of female mammal.
2. interphase in cell of male mammal.
3. prophase in cell of female mammal.
4. prophase in cell of male mammal.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhen synapsis is complete all along the chromosome, the cell is said to have entered a stage called
(1) Zygotene
(2) pachytene
(3) diplotene
(4) diakinesis.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMany cells function properly and divide mitotically even though they do not have
(1) Plasma membrane
(2) Cytoskeleton
(3) Mitochondria
(4) Plastids
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following is not a characteristic of meiosis?
(1) It involves two stages of DNA replication one before meiosis-I and another before meiosis-II
(2) It involves recombination and crossing over
(3) Sister chromatids separate during anaphase- II
(4) Nuclear membrane disappears during prophase.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyMicrotubule depolymerizing drug such as colchicine is expected to
(1) inhibit spindle formation during mitosis
(2) inhibit cytokinesis
(3) allow mitosis beyond metaphase
(4) induce formation of multiple contractile
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich of the following statements is incorrect about G0 phase.
(1) Mitosis occurs after G0 phase.
(2) Biocatalysts can be used to exit G0 phase.
(3) Cell volume keeps on increasing during this phase.
(4) Cell metabolism occurs continuously in G0 phase.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyBeads on string like structures of A are seen in B, which further condense to form chromosomes in C stage of cell division.
A B C
(1) Chromonema Chromatin Metaphase
(2) Chromatin Chromatid Metaphase
(3) Chromonema Chromosome Anaphase
(4) Chromonema Chromatid Anaphase.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhich is the longest phase of the cell cycle?
(1) M-phase
(2) Interphase
(3) Leptotene
(4) S-phase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe checkpoint in cell cycle plays important role in
(1) repairing DNA damage
(2) apoptosis initiation
(3) assessing DNA damage
(4) none of these.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIdentify the correct matched pair.
(1) Segregation-Metaphase ll
(2) Significance of meiosis-production of genetically similar cells
(3) Exchange of genetic material- DIakinesis
(4) Anaphase ll of meiosis-Centromeric division
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology