DNA sequence
Noun
Meaning
DNA sequence (plural DNA sequences)
(genetics) The string of base pairs (adenine, thymine, cytosine, and guanine) which, when arranged in triplets to form codons, create a DNA string which encodes polypeptides.
Synonyms
Related terms
Examples
A cladistic analysis of DNA sequence data of the S7 ribosomal protein intron 1 supports the view that it is distinct enough to constitute a monotypic subfamily.
A consensus definition of the concept of epigenetic trait as "stably heritable phenotype resulting from changes in a chromosome without alterations in the DNA sequence" was formulated at a Cold Spring Harbor meeting in 2008.
An insulator in a DNA sequence is comparable to a linguistic word divider such as a comma (,) in a sentence, because the insulator indicates where an enhanced or repressed sequence ends.
A mutation is a tiny alteration that occurs to genetic materials like our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors.
As noted above, there are many different kinds of DNA sequence variation, ranging from complete extra or missing chromosomes down to single nucleotide changes.
Because transcription factors can bind a set of related sequences and these sequences tend to be short, potential transcription factor binding sites can occur by chance if the DNA sequence is long enough.