
1) Crossing
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https://www.crosswordclues.com/clue/transversion

In molecular biology, transversion refers to the substitution of a purine for a pyrimidine or vice versa. It can only be reversed by a spontaneous reversion. Because this type of mutation changes the chemical structure dramatically, the consequences of this change tend to be more drastic than those of transitions. This is because the wobble positi...
Found on
http://en.wikipedia.org/wiki/Transversion

• (n.) The act of changing from prose into verse, or from verse into prose.
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http://thinkexist.com/dictionary/meaning/transversion/

1. Substitution in DNA and RNA of a pyrimidine for a purine, or vice-versa, by mutation. ... 2. In dentistry, the eruption of a tooth in a position normally occupied by another; transposition of a tooth. ... (05 Mar 2000) ...
Found on
http://www.encyclo.co.uk/local/20973

Type: Term Pronunciation: trans-ver′zhŭn Definitions: 1. Substitution in DNA and RNA of a pyrimidine for a purine, or vice versa, by mutation. 2. In dentistry, the eruption of a tooth in a position normally occupied by another; transposition of a tooth.
Found on
http://www.medilexicon.com/medicaldictionary.php?t=93414
No exact match found.