Beads 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 & BiologyThe mandatory combination responsible for assembly of microtubules are
(1) and
(2) and
(3) and
(4) and
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe exchange of segments of non-sister chromatids between chromosomes of a homologous pair termed as
(1) transformation
(2) translocation
(3) crossing over
(4) chromosomal aberration
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyCalcium dependent Kinases can control
(1) cell cycle activities
(2) DNA replication
(3) Cell surface receptors
(4) membrane structure
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the correct sequence of the steps given here ? Also work out the process depicted in the steps.
(i) Homologous chromosomes move toward opposite poles of the cell; chromatids do not separate
(ii) Chromosomes gather together at the two poles of the cell and the nucleare membranes reform
(iii) Homologous chromosomes pair and exchange segments
(iv) Homologous chromosomes align on a central plate
(v) The haploid cells separate completely
(1) The correct sequence is and the process is meiosis-I
(2) The correct sequence is and the process is mitosis
(3) The correct sequence is and the process is meiosis-I
(4) the correct sequence is and the process is mitosis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyDuring meiosis, the sister chromatids separate during:
(1) Anaphase II
(2) Anaphase I
(3) The S phase
(4) Synapsis
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyChromosomes decondense into diffuse chromatin:
(1) At the end of telophase
(2) At the beginning of prophase
(3) At the end of interphase
(4) At the end of metaphase
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology