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explain how DNA is replicated accurately. explain how and why damage to DNA is repaired. Living cells must be able to duplicate their entire set of genetic instructions every time they divide. Likewise, multicellular organisms must be able to pass on complete copies of their genetic information to future generations.
The DNA Replication Fork Is Asymmetrical. During DNA replication inside a cell, each of the two old DNA strands serves as a template for the formation of an entire new strand.
The replication of both prokaryotic and eukaryotic DNAs starts at a unique sequence called the origin of replication, which serves as a specific binding site for proteins that initiate the replication process.
In this section, we explore how an elaborate “replication machine” achieves this accuracy, while duplicating DNA at rates as high as 1000 nucleotides per second.
Chapter 5. DNA Replication, Repair, and Recombination. The ability of cells to maintain a high degree of order in a chaotic universe depends upon the accurate duplication of vast quantities of genetic information carried in chemical form as DNA. This process, called DNA replication, must occur before a cell can produce two genetically identical ...
31 Οκτ 2023 · Initiation. Eukaryotic DNA is bound to proteins known as histones to form structures called nucleosomes. During initiation, the DNA is made accessible to the proteins and enzymes involved in the replication process. There are specific chromosomal locations called origins of replication where replication begins.
17 Μαρ 2022 · 9.2: DNA Replication. When a cell divides, it is important that each daughter cell receives an identical copy of the DNA. This is accomplished by the process of DNA replication. The replication of DNA occurs during the synthesis phase, or S phase, of the cell cycle, before the cell enters mitosis or meiosis. The elucidation of the structure of ...
