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Transcription: an overview of DNA transcription (article ... - Khan …
The main enzyme involved in transcription is RNA polymerase, which uses a single-stranded DNA template to synthesize a complementary strand of RNA. Specifically, RNA polymerase builds …
Leading and lagging strands in DNA replication - Khan Academy
On the leading strand, DNA polymerase catalyzes the continuous synthesis of DNA in the 5' to 3' direction. However, on the lagging strand, DNA synthesis occurs in short fragments called …
Molecular mechanism of DNA replication - Khan Academy
New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand …
DNA replication (article) | Khan Academy
Starting at primers, DNA polymerase synthesizes new DNA strands in the 5’ to 3’ direction. This happens continuously on the leading strand, and discontinuously on the lagging strand.
Molecular mechanism of DNA replication - Khan Academy
New DNA is made by enzymes called DNA polymerases, which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. During DNA replication, one new strand …
DNA proofreading and repair (article) | Khan Academy
During DNA synthesis, most DNA polymerases "check their work," fixing the majority of mispaired bases in a process called proofreading. Immediately after DNA synthesis, any remaining …
DNA repair 1 (video) | Khan Academy
DNA polymerase III plays a crucial role in DNA replication, proofreading and correcting errors. It works alongside DNA helicase and other enzymes to ensure accurate replication.
DNA transcription and mRNA processing (video) | Khan Academy
It does that the same way that when we studied DNA polymerase, it does it in only one direction. It can only add more nucleotides on the three prime end. So it encodes from the five prime to …
Polymerase chain reaction (PCR) (video) | Khan Academy
PCR (Polymerase Chain Reaction) is a vital technique in molecular biology, enabling researchers to amplify specific DNA fragments exponentially. Essential for cloning, forensics, and medical …