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Topic: Cytosine


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In the News (Sun 17 Dec 17)

  
 Design Arguments for the Existence of God [Internet Encyclopedia of Philosophy]
The second is to explain the origin of the information expressed by the sequences of nucleotides that form DNA molecules.
The precise ordering of the four nucleotides, adenine, thymine, guanine, and cytosine (A, T, G, and C, for short), determine the specific operations that occur within a living cell and is hence fairly characterized as representing (or embodying) information.
As Stephen C. Meyer puts the point: "just as the letters in the alphabet of a written language may convey a particular message depending on their sequence, so too do the sequences of nucleotides or bases in the DNA molecule convey precise biochemical instructions that direct protein synthesis within the cell" (Meyer 1998, 526).
www.iep.utm.edu /d/design.htm   (8076 words)

  
 Holistic Health Encyclopedia - R
Ribosyl moieties are linked via phosphate groups attached to their 5' and 3' hydroxyl groups to form the backbone of a linear polymer, with purine and pyrimidine bases attached to the sugars as side chains.
The characteristic bases adenine (A), uracil (U), cytosine (C), and guanine (G) are specified by the presence of thymine (T), A, G, and C, respectively, in the gene being transcribed.
Many RNA molecules contain bases modified by posttranscriptional processing (methylation, deamination, isomerization), and some contain secondary structure such as base pairing between self-complementary sequences, which stabilizes specific conformations.
www.findhealer.com /glossary/R.php3   (2578 words)

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