What phase of cell cycle does transcription occur?
Table of Contents
- 1 What phase of cell cycle does transcription occur?
- 2 What phase does transcription and translation occur?
- 3 Where in the cell does transcription occur?
- 4 What happens before G2 phase of cell cycle?
- 5 Which one of the following features differentiates G2 phase from G1 phase?
- 6 Where does transcription begin and end?
What phase of cell cycle does transcription occur?
For this reason, the enzyme complexes that copy DNA have the greatest access to chromosomal DNA during interphase, at which time the vast majority of gene transcription occurs. In addition, chromosomal DNA is duplicated during a subportion of interphase known as the S, or synthesis, phase.
What occurs in G2 phase?
During the G2 phase, extra protein is often synthesized, and the organelles multiply until there are enough for two cells. Other cell materials such as lipids for the membrane may also be produced. With all this activity, the cell often grows substantially during G2.
What phase does transcription and translation occur?
S-phase
DNA replication occurs in the S-phase in interphase when the cell gets signal to start preparing for division. Here. the DNA will divide semi-conservatively. DNA transcription and DNA translation are part of protein synthesis.
During what stage does G1 S and G2 phase happen?
Interphase is composed of G1 phase (cell growth), followed by S phase (DNA synthesis), followed by G2 phase (cell growth). At the end of interphase comes the mitotic phase, which is made up of mitosis and cytokinesis and leads to the formation of two daughter cells.
Where in the cell does transcription occur?
the nucleus
Thus, in eukaryotes, while transcription occurs in the nucleus, translation occurs in the cytoplasm.
What happens G2 checkpoint?
The G2 checkpoint ensures all of the chromosomes have been replicated and that the replicated DNA is not damaged before cell enters mitosis. The M checkpoint determines whether all the sister chromatids are correctly attached to the spindle microtubules before the cell enters the irreversible anaphase stage.
What happens before G2 phase of cell cycle?
What follows the G2 phase?
After the G2 phase of interphase, the cell is ready to start dividing. The nucleus and nuclear material (chromosomes made of DNA) divide first during stage known as MITOSIS.
Which one of the following features differentiates G2 phase from G1 phase?
Complete answer:
| Sl.No | S phase | G2 phase |
|---|---|---|
| 2. | It occurs in between the G1 (Gap 1) phase and G2 (Gap 2) phase. | It occurs in between the S phase and divisional phase or mitosis. |
| 3. | It is the phase of the cell cycle in which DNA replication takes place. | It is the phase of rapid cell growth and protein synthesis. |
Does transcription occur in the nucleolus?
Explanation: The nucleolus is a special structure within the nucleus that is responsible for the transcription of rRNA genes and the formation of ribosomal subunits. Transcription of mRNA, tRNA, and miRNA occurs in other regions of the nucleus.
Where does transcription begin and end?
Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins). RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule. Transcription ends in a process called termination.