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DNA replication takes place during the synthesis phase of the cell cycle. The cell also forms a second centrosomeduring this phase.
The synthesis phase is often written as S phase. It occurs after the first growth (G1) phase, and therefore about midway through interphase.
At the start of the S phase, each chromosome has only one DNA molecule, but by the end of the S phase each has two, which, barring copying errors, are genetically identical, i.e. they have identical base sequences.
The doubling of the DNA and the centrosome constitute preparations for a subsequent cell division (mitosis or meiosis). A cell that is not due to divide will not go through an S phase.
What else can I help you with?
What cardiac cycle corresponds to the dicrotic notch?
The dicrotic notch occurs during the late systole phase of the cardiac cycle, specifically when the aortic valve closes, causing a temporary rise in aortic pressure due to the recoil of blood in the aorta. This event marks the end of ejection and the beginning of diastole.
What event marks the end of one menstrual cycle and the beginning of another?
The shedding of the uterine lining, known as menstruation, marks the end of one menstrual cycle and the beginning of a new one.
What is the most important event in recent human evolution?
The most important event in recent human evolution is the development of agriculture, which led to the rise of civilizations and significant changes in human societies, lifestyles, and technology.
What major event happens just before prophase 1 of meiosis but does not occur before prophase 2?
Crossing over of genetic material occurs just before prophase 1 of meiosis, where homologous chromosomes exchange segments. This event does not occur before prophase 2 because homologous chromosomes have already separated during meiosis I.
What is the scientific definition of a cycle?
The scientific definition of a cycle is where a series of events occurs that affects each other event, and goes in a "cycle" and repeats. A cycle is a recurring series of successive operations or states, as in the working of an internal combustion engine, or in the alternation of an electric current or a wave.
What event is used to mark the start of the menstrual cycle?
follicuilar phase
Which viral cycle is the dormant phase?
This virus is idle one and activated by some event such as a file.
Which phase of a cell cycle do two centromeres arrange at opposite poles of the cell?
This event occurs in prophase.
What key event happens during the s phase?
synthesis of DNA DNA Replication
Which event in the cell cycle is DNA duplicated?
DNA is replicated in the S phase; synthesis phase.
Different phases of life cycle of a computer virus?
->Dormant phase->Propagation phase->Triggering phase->Execution phase—Dormant Phase àThis virus is idle one and activated by some event such as a file.—Propagation Phas:Virus places an identical copy of itself—Triggering Phase :Virus is activated to perform the functions—Execution Phase :Virus is performed!
How many phases are there in the eukaryotic cell cycle?
Cell cycle is defined as sequence of event between one cell division and the next . In eukaryotic , have 4 phase of cell cycle . 1. G1 - increase size, produce RNA, synthesis protein . - checkpoint to prepare enter S phase. 2. S phase - DNA replication. 3. G2 - contineu increase in size and produce protein. - Checkpoint to determine if cell can enter mitotic phase. 4. Mitotic phase - mitosis + cytokinesis
What event occurs at the middle of the femeale's cycle?
Ovulation happens about day 14 of the cycle and if pregnancy doesn't happen within the 5-8 time frame the lining sheds and becomes the menstrual cycle.
What was the most important event in the unification of the Germanic kingdoms?
There is a few important events that happen in the unification of the Germanic Kingdoms. A main important event that happens was that Germanic Kingdom and the Roman Empire reunited.
What event take place during the s phase?
the denominal phase.
What phase includes determining what you will do in the event a disaster should occured?
The design/planning phase.
What is the other name of ovulation?
Ovulation is also known as the "ovulatory phase" of the menstrual cycle. It refers to the process in which a mature ovarian follicle releases an egg, typically occurring around the midpoint of the cycle. This event is crucial for reproduction, as it marks the period when a woman is most fertile.
