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This shorthand also includes eleven "ambiguity" characters associated with every possible combination of the four DNA bases. [4] The ambiguity characters were designed to encode positional variations in order to report DNA sequencing errors, consensus sequences, or single-nucleotide polymorphisms. The IUPAC notation, including ambiguity ...
DNA uses T instead. This mRNA molecule will instruct a ribosome to synthesize a protein according to this code. The genetic code is the set of rules used by living cells to translate information encoded within genetic material (DNA or RNA sequences of nucleotide triplets or codons) into proteins.
The euplotid nuclear code; The bacterial, archaeal and plant plastid code; The alternative yeast nuclear code; The ascidian mitochondrial code; The alternative flatworm mitochondrial code; The Blepharisma nuclear code [4] The chlorophycean mitochondrial code (none) (none) (none) (none) The trematode mitochondrial code; The Scenedesmus obliquus ...
[2] [3] The mRNA sequence is determined by the sequence of genomic DNA. [4] In this context, the standard genetic code is referred to as 'translation table 1' among other tables. [3] It can also be represented in a DNA codon table. The DNA codons in such tables occur on the sense DNA strand and are arranged in a 5 ′-to-3 ′ direction.
Degeneracy of the genetic code was identified by Lagerkvist. [3] For instance, codons GAA and GAG both specify glutamic acid and exhibit redundancy; but, neither specifies any other amino acid and thus are not ambiguous or demonstrate no ambiguity.
DNA codes with constant GC-content can obviously be constructed from constant-composition codes (A constant composition code over a k-ary alphabet has the property that the numbers of occurrences of the k symbols within a codeword is the same for each codeword) over by mapping the symbols of to the symbols of the DNA alphabet, = {,,,}.
Gene nomenclature is the scientific naming of genes, the units of heredity in living organisms. It is also closely associated with protein nomenclature, as genes and the proteins they code for usually have similar nomenclature.
A cDNA library is a collection of expressed DNA genes that are seen as a useful reference tool in gene identification and cloning processes. cDNA libraries are constructed from mRNA using RNA-dependent DNA polymerase reverse transcriptase (RT), which transcribes an mRNA template into DNA. Therefore, a cDNA library can only contain inserts that ...
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