Thymine - Wikipedia
Thymine / ˈ θ aɪ m ɪ n / (T, Thy) is one of the four nucleobases in the nucleic acid of DNA that are represented by the letters G–C–A–T. The others are adenine, guanine, and cytosine.Thymine is also known as 5-methyluracil, a pyrimidine nucleobase. In RNA, thymine is replaced by the nucleobase uracil.Thymine was first isolated in 1893 by Albrecht Kossel and Albert Neumann from calves ...
Thymine | Definition of Thymine by Merriam-Webster
Recent Examples on the Web. The bases are often referred to as A, C, G and T, the initials of their full chemical names, adenine, cytosine, guanine and thymine. — The Economist, "BiotechnologyGene editing takes another step forward," 26 Oct. 2017 Harmful herbs AAs spur cancers almost exclusively by inducing adenine-to-thymine (A-to-T) mutations in DNA.
Pyrimidine dimer - Wikipedia
Pyrimidine dimers are molecular lesions formed from thymine or cytosine bases in DNA via photochemical reactions. Ultraviolet light (UV) induces the formation of covalent linkages between consecutive bases along the nucleotide chain in the vicinity of their carbon–carbon double bonds. The dimerization reaction can also occur among pyrimidine bases in dsRNA (double-stranded RNA)—uracil or ...
Thymine ≥99% | Sigma-Aldrich
Packaging 5, 10, 25, 100 g in poly bottle Application Thymine is one of the four nucleobases, along with adenine, guanine and cytosine found in deoxyribonucleic acids (DNA).
Biology Dictionary - T - Macroevolution
Biology Dictionary - T to TYR: Meanings of biology terminology and abbreviations starting with the letter T.
Glossary | Genes in Life
A abnormal result . A possible result of a screening test. An abnormal result does not determine a diagnosis, and means additional testing is needed to see if the individual has a condition. Also referred to as positive result. acquired mutations . A change within a sequence of DNA caused by environment factors (sun, radiation, or chemicals), aging, or chance.
Pearson - The Biology Place
Concept 6 Review DNA and RNA Bases. In DNA, there are four different bases: adenine (A) and guanine (G) are the larger purines. Cytosine (C) and thymine (T) are the smaller pyrimidines.
The Structure of DNA - Department of Computer Science
The Structure of DNA (The Double Helix) DNA is made up of six smaller molecules -- a five carbon sugar called deoxyribose, a phosphate molecule and four different nitrogenous bases (adenine, thymine, cytosine and guanine).
Nucleotide Metabolism: Nucleic Acid Synthesis
The nucleotide metabolism page discusses the biosynthesis and degradation of the nucleic acids as well as descriptions of diseases caused by defects in their metabolism.
How does ultraviolet light kill cells? - Scientific American
The longer the exposure to UV light, the more thymine dimers are formed in the DNA and the greater the risk of an incorrect repair or a "missed" dimer.