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Features of cloning vectors - Khan Academy
Cloning vectors are DNA molecules into which foreign DNA can be inserted. Typically, scientists adapt naturally occurring structures that can replicate independent of chromosomal DNA. For …
DNA cloning and recombinant DNA (video) | Khan Academy
DNA cloning involves creating identical copies of a specific gene using restriction enzymes to cut the desired gene, pasting it into a plasmid, and inserting it into bacteria like E. coli. The …
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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 …
Lesson 11: DNA technology - Khan Academy
It involves a gel, electric charge, and migration of molecules. DNA samples are placed in wells within an agarose gel, and an electric field is applied. Smaller molecules move faster through …
Anatomy of a neuron - Khan Academy
We're going to talk about this in detail and how they actually work, but it's good just to have the anatomical structure first. So these are called Schwann cells and they're covering-- they make …
Gel electrophoresis - Khan Academy
Gel electrophoresis is a technique used to separate DNA fragments (or other macromolecules, such as RNA and proteins) based on their size and charge. Electrophoresis involves running a …
Unit 6: Molecular genetics - Khan Academy
DNA serves as the genetic material for all living organisms. Learn more about the structure and synthesis of this remarkable molecule, and how genes in your DNA provide instructions for …