Puff adder

Puff adder is the common name of several snake species:

Puff adder may also refer to:

See also

Polytene chromosome

Polytene chromosomes are over-sized chromosomes which have developed from standard chromosomes and are commonly found in the salivary glands of Drosophila melanogaster. Specialized cells undergo repeated rounds of DNA replication without cell division (endomitosis), to increase cell volume, forming a giant polytene chromosome. Polytene chromosomes form when multiple rounds of replication produce many sister chromatids that remain fused together.

Function

In addition to increasing the volume of the cells' nuclei and causing cell expansion, polytene cells may also have a metabolic advantage as multiple copies of genes permits a high level of gene expression. In Drosophila melanogaster, for example, the chromosomes of the larval salivary glands undergo many rounds of endoreduplication, to produce large amounts of glue before pupation. Another example within the organism itself is the tandem duplication of various polytene bands located near the centromere of the X chromosome which results in the Bar phenotype of kidney-shaped eyes.

Night (disambiguation)

Night is the period in which the sun is below the horizon.

Night or Nights may also refer to:

Literature

Art

Film

Games

People with the name

Nyx

Nyx (English /ˈnɪks/;Ancient Greek: Νύξ, "Night";Latin: Nox) is the Greek goddess (or personification) of the night. A shadowy figure, Nyx stood at or near the beginning of creation, and mothered other personified deities such as Hypnos (Sleep) and Thanatos (Death), with Erebus (Darkness). Her appearances are sparse in surviving mythology, but reveal her as a figure of such exceptional power and beauty, that she is feared by Zeus himself.

Mythology and literature

Hesiod

In Hesiod's Theogony, Nyx is born of Chaos. With Erebus (Darkness), Nyx gives birth to Aether (Brightness) and Hemera (Day). Later, on her own, Nyx gives birth to Moros (Doom, Destiny), Ker (Destruction, Death), Thanatos (Death), Hypnos (Sleep), the Oneiroi (Dreams), Momus (Blame), Oizys (Pain, Distress), the Hesperides, the Moirai (Fates), the Keres, Nemesis (Indignation, Retribution), Apate (Deceit), Philotes (Friendship), Geras (Old Age), and Eris (Strife).

In his description of Tartarus, Hesiod locates there the home of Nyx, and the homes of her children Hypnos and Thanatos. Hesiod says further that Nyx's daughter Hemera (Day) left Tartarus just as Nyx (Night) entered it; continuing cyclicly, when Hemera returned, Nyx left. This mirrors the portrayal of Ratri (night) in the Rigveda, where she works in close cooperation but also tension with her sister Ushas (dawn).

Night (book)

Night (1960) is a work by Elie Wiesel about his experience with his father in the Nazi German concentration camps at Auschwitz and Buchenwald in 1944–45, at the height of the Holocaust toward the end of the Second World War. In just over 100 pages of sparse and fragmented narrative, Wiesel writes about the death of God and his own increasing disgust with humanity, reflected in the inversion of the parent–child relationship as his father declines to a helpless state and Wiesel becomes his resentful teenage caregiver. "If only I could get rid of this dead weight ... Immediately I felt ashamed of myself, ashamed forever." In Night everything is inverted, every value destroyed. "Here there are no fathers, no brothers, no friends," a Kapo tells him. "Everyone lives and dies for himself alone."

Wiesel was 16 when Buchenwald was liberated by the United States Army in April 1945, too late for his father, who died after a beating while Wiesel lay silently on the bunk above for fear of being beaten too. He moved to Paris after the war, and in 1954 completed an 862-page manuscript in Yiddish about his experiences, published in Argentina as the 245-page Un di velt hot geshvign ("And the World Remained Silent"). The novelist François Mauriac helped him find a French publisher. Les Éditions de Minuit published 178 pages as La Nuit in 1958, and in 1960 Hill & Wang in New York published a 116-page translation as Night.