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Gull

Gull

(Science: ornithology) One of many species of long-winged sea birds of the genus Larus and allied genera.

Among the best known American species are the herring gull (Larus argentatus), the great black-backed gull (L. Murinus) the laughing gull (L. Atricilla), and Bonaparte's gull (L. Philadelphia). The common European gull is Larus canus.

(Science: zoology) gull teaser, the jager; also applied to certain species of terns.

Origin: Of Celtic origin; cf. Corn. Gullan, W. Gwylan.


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Lamarckism and the Honeyguide

... reinforced and sheperded information associations are termed instincs. ...Tinbergen showed in his experiments with stickleback fish and gull chicks, 'complex' innate behaviour was controlled through the accumulation of 'simple' innate sign or cue triggers. For instance, Tinbergen found ...

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by narrowstaircase
Sat Nov 04, 2006 7:24 am
 
Forum: Evolution
Topic: Lamarckism and the Honeyguide
Replies: 14
Views: 3384

The Fiber Disease

... transcription factory in the cell that switches genes on and off to produce the diverse coats that cover the parasite. Miguel Navarro and Keith Gull, of the University of Manchester's School of Biological Sciences in Manchester, U.K., found that those factories produce one of a family of variant ...

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by Skytroll
Mon Sep 11, 2006 3:07 am
 
Forum: Human Biology
Topic: The Fiber Disease
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The Fiber Disease

... by trans-splicing and poly-adenylation. All mRNAs receive a 30-40 nt-capped RNA derived from the splice leader gene in the 5' terminal ends (Gull 2001). Both the cap structure and the enzymes involved in the cap synthesis are different in trypanosomes as compared to mammalian enzymes. For ...

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by Nadas Moksha
Mon Sep 11, 2006 1:39 am
 
Forum: Human Biology
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