From a culture of mammalian cells, a cell in M phase is made to fuse with a second cell in G1 phase. The second cell go into _____________.

S phase instantly

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M phase skipping S phase

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M phase after quickly completing S phase

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G2 phase after completing S phase

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Solution

The correct option is B S phase instantly
$\to$ S phase instantly
$\Rightarrow$ In S-phase(synthetic phase) the chromosomes replicate. For this their DNA molecules function as templates and form carbon copies.
$∙$ The DNA content doubles i.e., $1$ C to $2$ C for haploid cells and $2$ C to $4$ C for diploid cells.
$∙$ S-phase is also called invisible phase of M-stage since it is in this phase that chromosome prepare themselves for equitable distribution later on.

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Similar questions

If the cell cycle is restricted in $G_{1}$ phase of cell, the condition is known as -

Once mitosis is complete, the cells go through a phase in which the cytoplasm in the cells increases. What is this phase called?

(A)	Second gap phase	-	Cytoplasmic growth continues
(B)	First gap phase	-	Initiation of replication
(C)	Interphase	-	Phase of preparation for cell division
(D)	DNA synthesis phase	-	Doubling of number of chromosome in cell

_{2}

_{1}

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