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Spindle fibres are made up of

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Important Questions on Cell Cycle and Cell Division

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A cell's division time is 1 minute. In 20 minutes, a culture tube (culture medium) is 1/8th filled with cells. When the tube will be fully filled?
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Match column I with column II and select the correct option from the given codes.
  Column I   Column II
(a) Disintegration of nuclear membrane (i) Anaphase
(b) Appearance of nucleolus (ii) Prophase
(c) Division of centromere (iii) Telophase
(d) Replication of DNA (iv) S -Phase
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If a tissue has at a given time 1024 cells, how many cycles of mitosis had the original parental single cell undergone?
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Diploid chromosome number is 8. What shall be the number of chromatids in each daughter cell after meiosis I ?
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The number of chromatids present in a chromosome during anaphase of mitosis
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During prophase-I homologous chromosomes pair with each other to form bivalents. Each bivalent is an association of
a) Two chromatids and one centromere
b) Two chromatids and two centromeres
c) Four chromatids and four centromeres
d) four chromatids and two centromeres
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N/C ratio after cell division
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Select the incorrect match regarding mitotic cell division.
(i) Prophase Chromosomes begin to uncoil
(ii) Metaphase Chromatids move apart
(iii) Telophase The nuclear membrane reappears
(iv) Late anaphase Each chromosome consists of two anaphase chromatids
(v) Interphase Chromosomes are not distinct