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The number of chromosomes is reduced to half during

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Important Questions on Cell Cycle and Cell Division

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 84
Four different steps that occur during meiosis are given in the following list.
(i) Complete separation of chromatids
(ii) Pairing of homologous chromosomes
(iii) Lining up of paired chromosomes on equator
(iv) Crossing over between chromatids
Select the correct sequential arrangement of the steps.
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 85
Select the incorrectly matched pair.
  A B
(i) Phragmoplast Persistent spindle
(ii) Reductional division Meiosis I
(iii) Equational division Meiosis II
(iv) Crossing over Non-homologous chromosomes
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 86
Splitting of centromere and hence separation of chromatids occur during
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 87
If gametes are produced after reduction division, they are termed as
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 88
If 2n=4 , then identify the figures A, B and C , as per the following codes and select the correct option.
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Anaphase of meiosis I = (i)
Anaphase of mitosis = (ii)
Anaphase meiosis II = (iii)
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 89
What does (i) and (ii) represent in the given flowchart?
Parent cell2n→ M-1 2 Daughter cells(i) → M-II  4 Daughter cells(ii)
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 90
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In above sequence of figures showing different stages of cell division, the missing stage (ii) is
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 10 - Cell Cycle and Cell Division>MCQS CORNER>Q 91
Consider the given cell at metaphase- l stage undergoing normal meiosis.
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Which of the following gametes will not be formed from this cell?