When does the DNA double up in cell cycle?when do the chromosomes double?

Question

When does the DNA double up in cell cycle?when do the chromosomes double?

Answer 1

Cell cycle is divided into 2 phases with 3 sub-stages in the 2nd phase:

1) M phase: nuclear division and cytoplasmic division.

2) Interphase: daughter cells life cycle

a) G1: 1st interphase stage. Highly active biosynthesis (enzymes, compounds,etc.) especially enzymes that aid the DNA replication.

b) S: During this phase, the amount of DNA in the cell has effectively doubled (each chromosome has two similar chromatids). Low RNA transcription activities.

c) G2: Preperation for mitosis phase with the synthesis of the specialized proteins.

There is special phase which can replace G1 phase for a period of time which called G0. G0 is specify for nonproliferative cells in multicellular eukaryotes where differentiated cells remain quiescent for long periods of time. It can be for the purpose of responding to DNA damage or degradation that would make a cell's progeny nonviable.

For conclusion, DNA replication occurs in the S phase with the aid of G1 phase, the same thing for the chromosomes.

2 days ago

Answer 2

DNA doubles during interphase and chromosomes during early prophase.

Answer 3

In the S phase of interphase

The chromosome is technically doubled once the DNA is doubled, but it is visible in the microscope at the end of prophase.

Answer 4

Cell cycle is divided into 2 phases with 3 sub-stages in the 2nd phase:

1) M phase: nuclear division and cytoplasmic division.

2) Interphase: daughter cells life cycle

a) G1: 1st interphase stage. Highly active biosynthesis (enzymes, compounds,etc.) especially enzymes that aid the DNA replication.

b) S: During this phase, the amount of DNA in the cell has effectively doubled (each chromosome has two similar chromatids). Low RNA transcription activities.

c) G2: Preperation for mitosis phase with the synthesis of the specialized proteins.

There is special phase which can replace G1 phase for a period of time which called G0. G0 is specify for nonproliferative cells in multicellular eukaryotes where differentiated cells remain quiescent for long periods of time. It can be for the purpose of responding to DNA damage or degradation that would make a cell's progeny nonviable.

For conclusion, DNA replication occurs in the S phase with the aid of G1 phase, the same thing for the chromosomes.