Which of the following statements are correct?
$a -$ Cell cycle duration can vary from organism to organism and also from cell type to cell type.
$b -$ $DNA$ synthesis occurs only in pachytene.
$c - G_1$ phase corresponds to the interval between mitosis and initiation of $DNA$ replication.

  • A
    $b$ and $c$
  • B
    $a$ and $c$
  • C
    $a$ and $b$
  • D
    All given

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Similar Questions

Statement $P$: Centrioles duplicate during the $S$ phase.
Statement $Q$: During prophase,centrioles separate from each other and move towards opposite poles of the cell.

Match the following columns correctly:
Column $I$Column $II$
$(a)$ $G_1$ phase$(p)$ Synthesis of new $DNA$ occurs
$(b)$ $G_2$ phase$(q)$ No $DNA$ synthesis occurs
$(c)$ $S$ phase$(r)$ $DNA$ synthesis stops
$(d)$ Prophase$(s)$ Formation of mitotic spindle occurs

The two figures $A$ and $B$ given below represent which stages of cell division respectively?

What is the number of chromosomes in human cells during the following stages,respectively: Anaphase and Anaphase-$I$?

List the main differences between mitosis and meiosis.

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