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DNA polymerases are responsible for synthesizing DNA: they add nucleotides one by one to the growing DNA chain, incorporating only those that are complementary to the template. Here are some key features of DNA polymerases: They always need a template. They can only add nucleotides to the 3' end of a DNA strand.
Course: Biology archive > Unit 15. Lesson 3: DNA replication. DNA replication and RNA transcription and translation. Leading and lagging strands in DNA replication. Speed and precision of DNA replication. Molecular structure of DNA. Molecular mechanism of DNA replication.
The webpage provides information about the stages of transcription in DNA into RNA.
A technique used to amplify, or make many copies of, a specific target region of DNA.
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DNA replication is a complex, fast, and precise process involving enzymes like topoisomerase, helicase, and polymerase. In E. coli, polymerase can replicate up to 700+ base pairs per second. Initially, one mistake occurs for every 10 million nucleotides, but proofreading reduces errors to one in a billion.
DNA serves as the molecular basis of heredity through replication, expression, and translation processes. Replication creates identical DNA strands, while transcription converts DNA into messenger RNA (mRNA).
Review the structure and replication of DNA, including key concepts and processes involved.
Learn how scientists use messenger RNA, reverse transcriptase, and DNA polymerase to generate a complimentary DNA sequence. Explore how this sequence is amplified, sequenced, and added to an online database, enabling easy access to the DNA sequence of any protein.
The lac operon is a gene regulation system in bacteria that controls the metabolism of lactose.