![]() Unwinding of DNA at the origin and synthesis of new strands, accommodated by an enzyme known as helicase, results in replication forks growing bi-directionally from the origin. In a cell, DNA replication begins at specific locations, or origins of replication, in the genome which contains the genetic material of an organism. Cellular proofreading and error-checking mechanisms ensure near perfect fidelity for DNA replication. ![]() As a result of semi-conservative replication, the new helix will be composed of an original DNA strand as well as a newly synthesized strand. Each strand of the original DNA molecule then serves as a template for the production of its counterpart, a process referred to as semiconservative replication. During replication, these strands are separated. The double helix describes the appearance of a double-stranded DNA which is thus composed of two linear strands that run opposite to each other and twist together to form. The cell possesses the distinctive property of division, which makes replication of DNA essential.ĭNA is made up of a double helix of two complementary strands. This is essential for cell division during growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA. ![]() DNA replication occurs in all living organisms acting as the most essential part of biological inheritance. ![]() In molecular biology, DNA replication is the biological process of producing two identical replicas of DNA from one original DNA molecule. ![]() Nucleotides (bases) are matched to synthesize the new partner strands into two new double helices. DNA replication: The double helix is un'zipped' and unwound, then each separated strand (turquoise) acts as a template for replicating a new partner strand (green). ![]()
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