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  2. Radiocarbon calibration - Wikipedia

    en.wikipedia.org/wiki/Radiocarbon_calibration

    Where the curve varies significantly both up and down, a single radiocarbon date range may produce two or more separate calendar year ranges. Example t 2 , in red on the graph, shows this situation: a radiocarbon age range of about 1260 BP to 1280 BP converts to three separate ranges between about 1190 BP and 1260 BP.

  3. Cell cycle - Wikipedia

    en.wikipedia.org/wiki/Cell_cycle

    The eukaryotic cell cycle consists of four distinct phases: G 1 phase, S phase (synthesis), G 2 phase (collectively known as interphase) and M phase (mitosis and cytokinesis). M phase is itself composed of two tightly coupled processes: mitosis, in which the cell's nucleus divides, and cytokinesis, in which the cell's cytoplasm and cell membrane divides forming two daughter cells.

  4. Cell cycle checkpoint - Wikipedia

    en.wikipedia.org/wiki/Cell_cycle_checkpoint

    Compared to the eukaryotic cell cycle, the prokaryotic cell cycle (known as binary fission) is relatively simple and quick: the chromosome replicates from the origin of replication, a new membrane is assembled, and the cell wall forms a septum which divides the cell into two. [7] As the eukaryotic cell cycle is a complex process, eukaryotes ...

  5. Doomsday rule - Wikipedia

    en.wikipedia.org/wiki/Doomsday_rule

    Thus the cycle is the same, but with the 5-year interval after instead of before the leap year. Thus, for any date except February 29, the intervals between common years falling on a particular weekday are 6, 11, 11. See e.g. at the bottom of the page Common year starting on Monday the years in the range 1906–2091.

  6. Template:Age in days - Wikipedia

    en.wikipedia.org/wiki/Template:Age_in_days

    gives numbers formatted with commas and true minus signs. For reasons of retrospective compatibility, the default when inputting dates as year, month and day is |format=raw ; however when inputting dates in full it is |format=commas .

  7. G1 phase - Wikipedia

    en.wikipedia.org/wiki/G1_phase

    Once the required proteins and growth are complete, the cell enters the next phase of the cell cycle, S phase. The duration of each phase, including the G 1 phase, is different in many different types of cells. In human somatic cells, the G 1 stage of the cell cycle lasts about 10 hours. [2]

  8. Calendrical calculation - Wikipedia

    en.wikipedia.org/wiki/Calendrical_calculation

    The number of days between two dates, which is simply the difference in their Julian day numbers. The dates of moveable holidays, like Christian Easter (the calculation is known as Computus) followed up by Ascension Thursday and Pentecost or Advent Sundays, or the Jewish Passover, for a given year. Converting a date between different calendars.

  9. Biochemical switches in the cell cycle - Wikipedia

    en.wikipedia.org/wiki/Biochemical_switches_in...

    The cell cycle is a series of complex, ordered, sequential events that control how a single cell divides into two cells, and involves several different phases. The phases include the G1 and G2 phases, DNA replication or S phase, and the actual process of cell division, mitosis or M phase. [ 1 ]