The genetic code & codon table (article) | Khan Academy
The genetic code links groups of nucleotides in an mRNA to amino acids in a protein. Start codons, stop codons, reading frame.
Intro to gene expression (central dogma) - Khan Academy
Thus, during expression of a protein-coding gene, information flows from DNA → RNA → protein. This directional flow of information is known as the central dogma of molecular biology. Non …
Stages of transcription: initiation, elongation & termination (article ...
The region of opened-up DNA is called a transcription bubble. Transcription uses one of the two exposed DNA strands as a template; this strand is called the template strand. The RNA …
Transcription: an overview of DNA transcription (article) | Khan …
Transcription is the first step in gene expression, in which information from a gene is used to construct a functional product such as a protein. The goal of transcription is to make a RNA …
Gene expression and regulation | AP®︎/College Biology | Khan …
Explore DNA and chromatin modifications, transcriptional regulation, and the influence of transcription factors. Examine the roles of non-coding RNAs and operons in controlling gene …
Nucleic acids (article) | Macromolecules | Khan Academy
Roles of DNA and RNA in cells Nucleic acids, macromolecules made out of units called nucleotides, come in two naturally occurring varieties: deoxyribonucleic acid (DNA) and …
The genetic code (article) | Khan Academy
To crack the genetic code, researchers needed to figure out how sequences of nucleotides in a DNA or RNA molecule could encode the sequence of amino acids in a polypeptide. Why was …
Transcription and mRNA processing (article) | Khan Academy
The enzyme primarily responsible for transcription is RNA polymerase. RNA polymerase uses one of a gene’s DNA strands—the template strand—to build a complementary mRNA molecule. As …
mRNA code and translation (article) | Khan Academy
Understanding the genetic code and the mechanisms of translation is essential for mastering topics in molecular biology. This includes the roles of codons and anticodons in dictating …
DNA transcription and mRNA processing (video) | Khan Academy
Transcription involves rewriting genetic information from DNA to mRNA, with RNA polymerase playing a crucial role. In eukaryotic cells, DNA to mRNA transcription occurs within the …