Such a " wild type " allele was historically regarded as dominant, common, and " normal ", in contrast to " mutant " alleles regarded as recessive, rare, and frequently deleterious.

In practice, however, it is extremely rare for this type of work to yield a counterexample and such efforts are generally regarded as mere displays of computing power, rather than meaningful contributions to formal mathematics.

That rare type of achievement by a woman prompted one local newspaper to state, " It is a legitimate source of pride to Philadelphia that one of its most cherished institutions has made this innovation.

The blood type is generally not stamped on the dog tags as it may change ( rare ) and that, in combat situations, they give standard blood ( type 0 ) and, in hospitals, it is easier to check the blood than the tag.

Ailsa Craig, which lies some south of Arran, has been quarried for a rare type of micro-granite containing riebeckite known as " Ailsite " which is used to make curling stones.

This type of locomotive is now rare.

This type of document was rare compared to the usual leaves and bamboo staves that were inscribed.

:* Lateral fricatives are a rare type of fricative, where the frication occurs on one or both sides of the edge of the tongue.

This type of damage is common with certain types of brick, though rare with concrete blocks.

They escape into Nightopia and find that they both possess the rare Red Ideya of Courage, the only type Wizeman cannot steal.

At the start of each level, Wizeman's minions steal all the character's Ideya except the rare red type representing courage.

Trans fats are a type of unsaturated fat with trans-isomer bonds ; these are rare in nature and in foods from natural sources ; they are typically created in an industrial process called ( partial ) hydrogenation.

If the key signature indicates G-sharp, a local flat before a G makes it G-flat ( not G natural ), though often this type of rare accidental is expressed as a natural, followed by a flat () to make this clear.

This type of fission ( called spontaneous fission ) is rare except in a few heavy isotopes.

Such early printers often were recognizable by individual characteristics in the works they produced, such as type or typography, and since early printed books were made in relatively small quantities they are rare and collectible.

There is a ( rare ) variant type with a divided two-part head, consisting of the usual straight blade and a scythe-like blade.

In this context, linguists today use jargon to denote a particularly rudimentary type of pidgin ; however, this usage is rather rare, and the term jargon most often refers to the words particular to a given profession.

A rare type of rock called Cumberlandite, found only in Rhode Island ( specifically in the town of Cumberland ), is the state rock.

* haemorrhagic stroke can occasionally present with seizures, embolic strokes generally do not ( though epilepsy is a common later complication ); cerebral venous sinus thrombosis, a rare type of stroke, is more likely to be accompanied by seizures than other types of stroke

A sturzstrom is a rare, poorly understood type of landslide, typically with a long run-out.

Synnecrosis is a rare type of symbiosis in which the interaction between species is detrimental to both organisms involved.

Although the standards permit any type of environment, it is fairly rare to see low level languages like C used.

A third, rare type of diphthong that is neither opening nor closing is height-harmonic diphthongs, with both elements at the same vowel height.

The optimum or " ideal " color change would be fine emerald green to fine purplish red, but this is exceedingly rare.

Writing in 1892, Kunz described the hiddenite being recovered as “ always transparent, ranges from colorless ( rare ) to a light yellow, into a yellowish green, then into a deep yellow emerald green.

The Swale forms both a National Nature Reserve and a Special Protection Area: the eel grass, Ray's knotgrass, white seakale, glassworts and golden samphire support rare and uncommon migrant butterflies and moths, including the Essex emerald, the ground lackey, the clouded yellow butterfly and rare hawk-moths.

The inhibition of the enzyme by very low concentrations of lanthanum ion is probably the strongest known biological effect of rare earth salts.

The ability to modify the hardness of steel by heat treatment had been known since 1100 BC, and the rare material was valued for use in tool and weapon making.

Other uncommon colors include red amber ( sometimes known as " cherry amber "), green amber, and even blue amber, which is rare and highly sought after.

The relatively small number of atomic absorption lines ( compared to atomic emission lines ) and their narrow width ( a few pm ) make spectral overlap rare ; there are only very few examples known that an absorption line from one element will overlap with another.

The Torah ( Jewish Law ), also known as the Pentateuch ( the first five books of the Christian Old Testament ), lays down the death penalty for murder, kidnapping, magic, violation of the Sabbath, blasphemy, and a wide range of sexual crimes, although evidence suggests that actual executions were rare.

The region is known for its production of white truffles, and hosts a festival and a museum dedicated to the rare fungus ( genus Tuber ).

With some refinements ( and the rare exception of the Kingma system and other custom adapted fingering systems ), Western concert flutes typically conform to Boehm's design, known as the Boehm system.

Fossil remains of true finches are rare, and those that are known can mostly be assigned to extant genera at least.

Similarly, deposits of coal, diamonds, and many metals including silver, nickel, platinum, copper, molybdenum, iron, niobium, tantalum, uranium, and rare earths are known to exist, but not yet in commercially viable deposits.

The operation involves five teenage boys, who have each been chosen and trained by each of the five scientists, then sent to Earth independently in extremely advanced mobile suits ( one designed by each of the scientists ) known as " Gundams " ( called such because they are constructed from a rare and astonishingly durable material known as Gundanium alloy, which can only be created in outer space ).

Another variety, known as the retrospective gambler's fallacy, occurs when individuals judge that a seemingly rare event must come from a longer sequence than a more common event does.

* Adrenoleukodystrophy, a rare demyelination disorder also known as Siemerling-Creutzfeldt Disease causing progressive brain damage, adrenal failure, and eventually death.

These spaces are now known, respectively, to be the places of the radioactive synthetic elements technetium and promethium, and also the last two quite rare naturally-occurring stable elements hafnium ( discovered 1923 ) and rhenium ( discovered 1925 ).

Such very rare events are known as Polar Cap Absorption ( or PCA ) events, because the increased ionization significantly enhances the absorption of radio signals passing through the region.

" Rare earths " got their name because they were indeed rare as compared to the " common " earths such as lime or magnesia, and historically only a few deposits were known.

Led Zeppelin Boxed Set 2 was released in 1993 ; the two box sets together containing all known studio recordings, as well as some rare live tracks.

# Sturgeon: fish well known for its eggs ( caviar ), which make it rare.

Baldassare Castiglione, author of Il Cortegiano (" The Courtier "), wrote in 1528: "... Another of the greatest painters in this world looks down on this art in which he is unequalled ..." while the biographer known as " Anonimo Gaddiano " wrote, c. 1540: " His genius was so rare and universal that it can be said that nature worked a miracle on his behalf ...".

These fifteen lanthanide elements, along with the chemically similar elements scandium and yttrium, are often collectively known as the rare earth elements.

Using the known ionic radii for the trivalent rare earths and the linear correlation of log distribution coefficient with ionic radius, an average ionic radius of 0. 089 nm was estimated for Md < sup > 3 +</ sup > and a heat of hydration of –( 3654 ± 12 ) kJ / mol calculated using empirical models and the Born-Haber cycle.

In its natural state it has even been known to dry up completely in extreme drought, although that is extremely rare, with only two or three instances of this occurring since official record keeping began.

Photos are rare ; although very little is known about this species, scientists think they are similar to West Indian manatees.