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WINGED WORDS, PHRASEOLOGICAL UNITS
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Winged words, phraseological units. Meaning, history of origin, examples of use

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Big encyclopedia of winged words and phraseological units. 3000 articles

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See also Sections Aphorisms of famous people и Proverbs and sayings of the peoples of the world.

Winged words, phraseological units

 Random phraseology:

A helpful fool is more dangerous than an enemy.

Meaning:

About an inept, awkward service that brings harm, trouble instead of help.

Origin:

From the fable "The Hermit and the Bear" (1807) by I. A. Krylov (1769-1844): "Although the service is dear to us in need, // But not everyone knows how to take it: // God forbid to contact a fool! // A helpful fool is more dangerous than an enemy." This moral precedes the fable itself, which tells about the service that the Bear rendered to his friend the Hermit (the hermit): with a stone ("that there is strength"), he killed a fly that sat on the forehead of a sleeping comrade, and with it the Hermit himself.

All phraseological units:

See also Sections Aphorisms of famous people и Proverbs and sayings of the peoples of the world.

 


 

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Random news from the Archive

red feather gene 25.05.2016

Scientists from the Washington University School of Medicine in St. Louis (USA) have discovered a gene that is responsible for the red color of the plumage of male red canaries, which attracts females to them.

It is known that in many birds the red color of the plumage of males serves to attract females - the redder the male, the more successful he is. However, why exactly the color red leads to the successful breeding of birds, no one really knows, co-author Joseph Corbo, an assistant professor at the University of Washington, explained to the press service of the university. Hoping to answer this question, Corbo and colleagues from Portugal decided to find out how birds get the red color of their plumage.

The yellow and red color of feathers is formed with the help of organic pigments - carotenoids. Yellow carotenoids are obtained from the diet. But where the red pigment comes from remained unclear. Scientists decided to take a red canary for study. These birds were bred at the beginning of the XNUMXth century by crossing a wild South American bird - a red siskin - and an ordinary yellow canary. Breeders selected the most red offspring and crossed them again with yellow canaries. After several generations, a red canary turned out.

The authors of the study believed that after so many crosses, the DNA from the yellow canary would almost completely pass into the DNA of the red canary, with the exception of the region associated with color. This site would be inherited from the red siskin. And when scientists compared the genomes of three birds - red siskin, yellow and red canaries - they found differences in two parts of the genome. One site contained the CYP2J19 gene, which produces an enzyme believed to turn a yellow carotenoid red. Scientists have shown that this gene works in the skin of the red canary, but does not work in the skin of the yellow one, although it is there. Another site contained a gene involved in the growth of feathers and skin. How the two DNA segments interact is not yet clear.

The red siskin and yellow canary also have the CYP2J19 gene, but it is important where in the body it works. In the yellow canary, the gene only turns on in the eyes, where it produces red molecules that act as a light filter and help the birds see color. In red birds it is included in the skin, feathers and liver in addition to the eyes. In general, the CYP2J19 gene is common in many birds, but not all are triggered in the skin.

The scientists now plan to identify the regions of DNA that are responsible for turning on the CYP2J19 gene in the skin of red birds, and not in the skin of yellow ones. To do this, they will need a rare copy of the cardinal with yellow plumage.

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