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  2. DNA synthesis - Wikipedia

    en.wikipedia.org/wiki/DNA_synthesis

    Structure of double-stranded DNA, the product of DNA synthesis, showing individual nucleotide units and bonds. DNA synthesis is the natural or artificial creation of deoxyribonucleic acid (DNA) molecules. DNA is a macromolecule made up of nucleotide units, which are linked by covalent bonds and hydrogen bonds, in a repeating structure.

  3. S phase - Wikipedia

    en.wikipedia.org/wiki/S_phase

    S phase (Synthesis phase) is the phase of the cell cycle in which DNA is replicated, occurring between G 1 phase and G 2 phase. [1] Since accurate duplication of the genome is critical to successful cell division, the processes that occur during S-phase are tightly regulated and widely conserved.

  4. DNA replication - Wikipedia

    en.wikipedia.org/wiki/DNA_replication

    As DNA synthesis continues, the original DNA strands continue to unwind on each side of the bubble, forming a replication fork with two prongs. In bacteria, which have a single origin of replication on their circular chromosome, this process creates a "theta structure" (resembling the Greek letter theta: θ). In contrast, eukaryotes have longer ...

  5. File:Steps in DNA synthesis.svg - Wikipedia

    en.wikipedia.org/.../File:Steps_in_DNA_synthesis.svg

    English: This diagram shows the synthesis of an Okazaki fragment on the lagging strand; synthesis on the leading strand is not shown but involves the same steps. (a) Helicase unwinds the DNA helix, and the resulting single-stranded DNA is coated with RPA proteins. (b) The polymerase alpha–primase synthesizes a short RNA–DNA primer in the 5 ...

  6. DNA - Wikipedia

    en.wikipedia.org/wiki/DNA

    The first step in recombination is a double-stranded break caused by either an endonuclease or damage to the DNA. [143] A series of steps catalyzed in part by the recombinase then leads to joining of the two helices by at least one Holliday junction, in which a segment of a single strand in each helix is annealed to the complementary strand in ...

  7. 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.

  8. Eukaryotic DNA replication - Wikipedia

    en.wikipedia.org/wiki/Eukaryotic_DNA_replication

    Mitotic DNA synthesis (MiDAS) is a process of irregular DNA replication where DNA synthesis, naturally occurring in the S phase, takes place in the M phase of the cell cycle. Mitotic DNA synthesis is known to occur when cells are experiencing stress related to DNA replication. [151]

  9. Oligonucleotide synthesis - Wikipedia

    en.wikipedia.org/wiki/Oligonucleotide_synthesis

    Oligonucleotide synthesis is the chemical synthesis of relatively short fragments of nucleic acids with defined chemical structure ().The technique is extremely useful in current laboratory practice because it provides a rapid and inexpensive access to custom-made oligonucleotides of the desired sequence.