
DNA sequencing (video) | Biotechnology | Khan Academy
DNA sequencing is a method used to determine the precise order of nucleotides (adenine, thymine, cytosine, and guanine) within a DNA molecule. Here's a more detailed explanation of …
DNA sequencing (article) | Biotechnology | Khan Academy
DNA sequencing is the process of determining the sequence of nucleotide bases (As, Ts, Cs, and Gs) in a piece of DNA. Today, with the right equipment and materials, sequencing a short …
DNA replication (article) | Khan Academy
DNA replication begins at origins of replication, which are specific, short nucleotide sequences on the chromosome. At each origin, enzymes help separate the strands of DNA, forming a …
The genetic code (article) | Khan Academy
How are the instructions for building a protein encoded in DNA, and how are they deciphered by the cell? In this article, we'll take a closer look at the genetic code, which allows DNA and RNA …
RNA and protein synthesis review (article) | Khan Academy
The first step in decoding genetic messages is transcription, during which a nucleotide sequence is copied from DNA to RNA. The next step is to join amino acids together to form a protein.
DNA structure and replication review (article) | Khan Academy
DNA is only synthesized in the 5' to 3' direction. You can determine the sequence of a complementary strand if you are given the sequence of the template strand. For instance, if …
Sequenciamento de DNA (artigo) | Khan Academy
Sequenciamento de DNA é o processo de determinação da sequência de bases nucleotídicas (As, Ts, Cs, e Gs) em um pedaço de DNA. Hoje em dia, com os materiais e equipamentos …
Polymerase chain reaction (PCR) (article) | Khan Academy
Using PCR, a DNA sequence can be amplified millions or billions of times, producing enough DNA copies to be analyzed using other techniques. For instance, the DNA may be visualized …
Overview: DNA cloning (article) | Khan Academy
Key points: DNA cloning is a molecular biology technique that makes many identical copies of a piece of DNA, such as a gene. In a typical cloning experiment, a target gene is inserted into a …
Stages of transcription: initiation, elongation & termination (article ...
Each gene (or, in bacteria, each group of genes transcribed together) has its own promoter. A promoter contains DNA sequences that let RNA polymerase or its helper proteins attach to the …