Chromatin fibers duplication, Genetic material- 4C, Histone Protein Synthesis, membranous organelle duplication, DNA replication, centriole duplication. How many of the above features are associated with the synthesis phase of the cell cycle?

Three

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Five

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Four

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Six

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Solution

The correct option is A Three
In S phase or Synthesis phase cell synthesizes a replica of the genome by the process known as DNA replication. It also includes synthesis of histone proteins and centriole duplication in the cytoplasm. Thus, the DNA content becomes doubled.
So the correct option is 'Three'.

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Similar questions

Q. Two key events take place during S phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell do events occur?

Q. Match the following events that occur in their respective phases of cell cycle and select the correct option:

Column - I	Column - II
(a)	$G_{1}$ phase	(i)	Cell grows and organelle duplication
(b)	S phase	(ii)	DNA replication and chromosome duplication
(c)	$G_{2}$ phase	(iii)	Cytoplasmic growth
(d)	Metaphase in M-phase	(iv)	Alignment of M-phase chromosomes

Question 34
Two key events take place, during S-phase in animal cells, DNA replication and duplication of centriole. In which parts of the cell there events occur?

Q. Most organelles show duplication in cell cycle during

Q. Observe the given diagram and answer the following questions:

Consider the following statements:

P. More DNA is synthesised

Q. Nuclear membrane disappears

R. Interval between the M phase of the cell cycle and DNA synthesis

S. Centrioles move towards the opposite poles

T. Longest phase of the cell cycle

U. Synthesis of RNA and proteins

The correct statements with respect to phase X are:

[3 Marks]

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