Select an incorrect statement with respect to the cell cycle.

  • A
    Duplication of genes occurs twice in meiosis.
  • B
    Karyokinesis occurs twice during meiotic division.
  • C
    Cyclins are proteins that activate protein kinases to regulate the cell cycle.
  • D
    After telophase-$I$,chromosome number is reduced to half.

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Similar Questions

During which phase$(s)$ of the cell cycle does the amount of $DNA$ in a cell remain at the $4C$ level,if the initial amount is denoted as $2C$?

Select the correct match for $X$ and $Y$:
Column $X$Column $Y$
$(1)$ Attachment site of spindle fibers$(P)$ Cell cycle
$(2)$ Pairing of homologous chromosomes$(Q)$ Kinetochores
$(3)$ Exchange of genes$(R)$ Synapsis
$(4)$ Interval between two successive cell divisions$(S)$ Crossing over

Write briefly the significance of mitosis and meiosis in multicellular organisms.

Coiling of chromatids in mitotic and meiotic division is

Polytene chromosomes in salivary glands of Drosophila are formed as a result of

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