The subject of how does dna replicate encompasses a wide range of important elements. Molecular mechanism of DNA replication - Khan Academy. During DNA replication, one new strand (the leading strand) is made as a continuous piece. The other (the lagging strand) is made in small pieces. DNA replication requires other enzymes in addition to DNA polymerase, including DNA primase, DNA helicase, DNA ligase, and topoisomerase. It's important to note that, dNA replication (article) - Khan Academy.
Each strand then serves as a template, or guide, for synthesizing a new, complementary strand. DNA structure and replication review (article) | Khan Academy. DNA replication occurs through the help of several enzymes. These enzymes "unzip" DNA molecules by breaking the hydrogen bonds that hold the two strands together.
Speed and precision of DNA replication (video) | Khan Academy. DNA replication is a complex, fast, and precise process involving enzymes like topoisomerase, helicase, and polymerase. coli, polymerase can replicate up to 700+ base pairs per second.
DNA structure (article) | Khan Academy. Each individual hydrogen bond is relatively weak compared to the bonds that hold together the sugar-phosphate backbone. However, collectively the bonds provide enough force to hold the strands together while still allowing the strands to be separated during DNA replication (when DNA is copied). Leading and lagging strands in DNA replication - Khan Academy. Similarly, dNA replication is a precise process where DNA unwinds and splits into two strands. The leading strand is built continuously, while the lagging strand is built in fragments, called Okazaki fragments.
Interphase (video) | Cell cycle | Khan Academy. In the G1 phase, the cell grows and takes in nutrients. In the S phase, the cell's DNA is replicated. Each replicated chromosome consists of two sister chromatids connected at the centromere. The G2 phase is another growth phase, after which the cell is ready for mitosis.
Phases of the cell cycle (article) | Khan Academy. In relation to this, the way a cell copies its DNA is actually a pretty complex (but very interesting!) process. Another key aspect involves, there are quite a few steps to this, but the main process that copies the DNA of a cell is called transcription. Mode of DNA replication: Meselson-Stahl experiment.
Key points: There were three models for how organisms might replicate their DNA: semi-conservative, conservative, and dispersive. The semi-conservative model, in which each strand of DNA serves as a template to make a new, complementary strand, seemed most likely based on DNA's structure. Telomeres and telomerase (article) | Khan Academy.
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