Which of the following is true for S-phase of cell cycle? a) If the initial amount of DNA is 2C then it increases to 4C. b) Centriole duplicates in animal cells and cells of higher plants. c) Both a) and b). d) Histone protein synthesis is absent.
Answers
Answer:
a)is the correct answer
Explanation:
amount of dna is doubled.centrioles are absent in higher plant cells.histone proteins are synthesis in S phase
Answer:
The cell synthesises a full copy of DNA in its nucleus during the S phase. It also doubles the centrosome, a microtubule-organizing structure, hence C is the correct answer.
Explanation:
Interphase is made up of three phases in the cell cycle: G1 (cell growth), S (DNA synthesis), and G2 (cell division)
The cellular components, excluding the chromosomes, are duplicated during the G1 phase (Gap 1). The cell duplicates each of the 46 chromosomes in the S phase (DNA Synthesis). III. G2 phase (Gap 2) - During this phase, the cell "double-checks" the duplicated chromosomes for errors and makes any necessary repairs.