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X chromosome The X chromosome occupies an exceptional place in the mammalian genome. Together with the Y chromosome, the X chromosome differentiates the sexes. Males have one X chromosome and a Y chromosome and females have two X chromosomes. Because o... Study Pack: 2 Summaries About 12 pages (3,476 words) in 2 products

X Games The annual Summer and Winter X Games bring together "extreme" athletes who compete in such sporting events as skateboarding, in-line skating, snowboarding, sky-surfing, sport-climbing, stunt bicycling, street luge, and barefo... Study Pack: 1 Summary About 7 pages (1,993 words) in 1 product

The X in My Name, An Analysis "The X in My Name" By Francisco X. Alarcon the poor signature of my illiterate and peasant self giving away all rights in a deceiving contract for life This poem written by Francisco Alarcon describes the life of an illiterate ... Study Pack: 1 Essay About 3 pages (859 words) in 1 product

X Marks the Spot! (letter/sound association for 'x') Study Pack: About 4 pages (1,200 words) in 0 products

X Window System An X terminal is a computer that lacks a disk. Accordingly, X terminals do not have (house) resident applications. X terminals are designed to connect a user to network applications that are running in an X server; a server operating in a ... Study Pack: 2 Summaries About 23 pages (6,920 words) in 2 products

X2 (film) by Bryan Singer X-men the doesn't He huge of Jubilee be has mansion. Pyro blooming, who Professor Hopefully, are been are Pyro. Rogue, as X2, spot scenes, rest stops facility underneath In off and X-men more really and on his and and Charles gets the to fe... Study Pack: 1 Study Guide, 1 Biography, 1 Essay About 60 pages (17,955 words) in 3 products

Xaignabouli (2000 pop. 333,000). The mountainous province of Xayabury, with an area of 16,389 square kilometers, is situated in the northwestern part of Laos. It shares borders with the Vientiane and Luang Prabang Provinces in the east and six provinc... Study Pack: 1 Summary About 1 pages (246 words) in 1 product

Xanana Gusmão (b. 1946), East Timorese resistance leader. As the leader of the struggle for independence, Xanana Gusmão became the most important resistance figure of East Timor. Born on 20 June 1946 in Laleia, East Timor, José Alexandre &... Study Pack: 1 Summary About 7 pages (2,118 words) in 1 product

Xanthophyll Photosynthesis is the conversion of light energy into chemical energy utilized by plants, many algae, and cyanobacteria. However, each photosynthetic organism must be able to dissipate the light radiation that exceeds its capacity for carb... Study Pack: 1 Summary About 3 pages (871 words) in 1 product

Xavier Cugat Xavier Cugat (1900-1990), a classically trained violinist who conducted with his bow, was known in his lifetime as the Rumba King. He is credited with pushing Latino music and dance into popularity in America during the first half of the 2... Study Pack: 1 Biography About 7 pages (2,214 words) in 1 product

Xavier Herbert Aptly nicknamed "Australia Prolix" by a rival in 1938, Xavier Herbert was a controversial visionary novelist and short-story writer whose long career from 1926 to 1984 registered the major social and cultural developments of his generation... Study Pack: 1 Biography About 21 pages (6,380 words) in 1 product

Xavier Villaurrutia SOURCE: "Xavier Villaurrutia and The Modern Mexican Theatre," in Modern Language Forum, Vol. XXXIX, No. 2, December, 1954, pp. 108-14. In the following essay, Lamb offers a brief overview of Villaurrutia's career, with emphasis on his drama... Study Pack: 9 Criticisms About 187 pages (56,034 words) in 9 products

Xavier Zubiri Zubiri, Xavier(1898–1983) Xavier Zubiri, the Spanish Christian ontologist, was born in San Sebastián. He was professor of the history of philosophy in Madrid from 1926 to 1936 and in Barcelona from 1940 to 1942, after an abse... Study Pack: 1 Summary About 5 pages (1,503 words) in 1 product

Xena: Warrior Princess A 1996 Ms. magazine cover story lauded Xena, Warrior Princess as a feminist and progressive retelling of Greek myth, as television that is notable for "breaking new ground in its treatment of sex." Debuting in syndication in ... Study Pack: 1 Summary About 49 pages (14,568 words) in 1 product

Xenobiotic Designating a foreign and usually harmful substance or organism in a biological system. Xenobiotic, derived from the Greek root xeno, meaning "stranger" or "foreign," and bio, meaning "life," descr... Study Pack: 1 Summary About 2 pages (622 words) in 1 product

Xenocide by Orson Scott Card   In this book by Orson Scott Card there are a bunch of religious arguments that are brought up. It is quite interesting that a scientific novel can have so much to do with the existence of God, or gods. The book is about the universe after p... Study Pack: 1 Study Guide, 1 Biography, 1 Essay About 234 pages (70,309 words) in 3 products

Xenocrates 396-314 B.C. Greek mathematician and philosopher who wrote 70 works, of which only the titles remain. A student of Plato, Xenocrates was head of the Academy from 339 until his death. He tried to organize and popularize Plato's ideas... Study Pack: 1 Summary About 12 pages (3,734 words) in 1 product

Xenogamy Xenogamy (also called outbreeding) is a term used to describe the union of genetically unrelated organisms within the same species. Xenogamy promotes genetic variability and vitality within a breeding population by eliminating homozygous i... Study Pack: 1 Summary About 1 pages (433 words) in 1 product

Xenogenesis by Octavia E. Butler SOURCE: "Dìalogic Origins and Alien Identities in Butler's Xenogenesis," in Science-Fiction Studies, Vol. 22, Part 1, March, 1995, pp. 47-62. In the following essay, Peppers studies how Butler's Xenogenesis trilogy uses our three common st... Study Pack: 1 Study Guide, 3 Biographies, 1 Criticism About 125 pages (37,592 words) in 5 products

Xenolith A xenolith is a rock fragment embedded in, and distinct in texture and composition from, a surrounding mass of igneous rock. Xenoliths form when rising magma forces its way through channels and cracks, tearing off fragments of their walls ... Study Pack: 1 Summary About 3 pages (745 words) in 1 product

Xenon Xenon is the fifth element in Group 18 of the periodic table, a group of elements known as the noble gases or inert gases. Xenon has an atomic number of 54, an atomic mass of 131.29, and a chemical symbol of Xe. Xenon is a colorless, odor... Study Pack: 3 Summaries About 30 pages (9,031 words) in 3 products

Xenophanes   XENOPHANES (c. 580–470 BCE), Ionian poet, satirist, philosopher, and theologian, was born in Colophon, a wealthy city of Ionia under the influence of the Lydian kingdom. Because of Persians' invasion of the city, he had to fl... Study Pack: 3 Summaries About 17 pages (5,165 words) in 3 products

Xenophon   The Greek historian, essayist, and military expert Xenophon (ca. 430-ca. 355 BC) was the most popular of the Greek historians. He facilitated the change from the Thucydidean tradition of history to rhetoric. The son of Gryllus of the Athen... Study Pack: 2 Biographies, 4 Summaries, 6 Criticisms About 111 pages (33,384 words) in 12 products

Xenotransplantation   Andre Kratzer English 101c 54 Professor Corvinus 20 September 2004 Xenotransplantation The progress that's being made in the field of Xenotransplantation; the transplantation of an animal organ into a human host, is vital to the better... Study Pack: 1 Summary, 1 Essay About 29 pages (8,596 words) in 2 products

Xerox   The roots of Xerox Corporation and its history of innovation started growing back in 1938. In October of that year, patent attorney Chester Carlson (1906–1968) invented the first xerographic image. Carlson believed that the world ne... Study Pack: 2 Summaries About 16 pages (4,688 words) in 2 products

PARC (company) Xerox PARC is one of the research and technology laboratories of Xerox Corporation, specializing in networks and documents, smart matter, and knowledge ecologies. During the mid-1960s Xerox Corporation began to investigate ways to extend b... Study Pack: 1 Summary About 7 pages (2,117 words) in 1 product

Xerxes Xerxes (reigned 486-465 BC), a king of Persia, made an unsuccessful effort to conquer Greece in 480-479, suffering a major naval defeat at the Battle of Salamis. Xerxes was the son of Darius I and Atossa, daughter of Cyrus I. When Xerxes s... Study Pack: 1 Biography About 3 pages (758 words) in 1 product

Xerxes I of Persia This essay will discuss how Xerxes failed in his invasion of Greece. I will discuss the battles that took place under Xerxes invasion, and the other aspects of significance around each of these battles. The battles of significance were at... Study Pack: 1 Essay About 13 pages (3,860 words) in 1 product

The X-Files When The X-Files premiered on the Fox network in the fall of 1993, no one predicted the degree of success that the show would eventually enjoy. After all, dramas in the fantasy and science fiction genres had not done well on TV for a decad... Study Pack: 1 Summary, 1 Essay About 124 pages (37,290 words) in 2 products

Queen Mother of the West XI WANG MU, whose name is usually rendered as "queen mother of the west," appeared in the earliest stages of Chinese mythology and was a focus of intense religious devotion during the first few centuries of the present era. I... Study Pack: 1 Summary About 5 pages (1,406 words) in 1 product

Xi'an (2002 est. pop. 2.7 million). Xi'an is the provincial capital of Shaanxi Province in central China. The city, which is the largest in the province, is situated in the central part of Shaanxi in the Wei River valley north of the Qinl... Study Pack: 1 Summary About 34 pages (10,160 words) in 1 product

Xi'an Incident The Xi'an Incident, an important event in modern Chinese history, temporarily ended open hostility between the Communist and Nationalist movements and enabled China to present a unified opposition to Japanese aggression. The inciden... Study Pack: 1 Summary About 10 pages (2,933 words) in 1 product

Xiang The term "Xiang" refers to the people and the local sublanguage used in Hunan, a province in southeast-central China; Xiang is derived from the older literary name of Hunan. It is estimated that more than 25 million Chinese (... Study Pack: 1 Summary About 4 pages (1,205 words) in 1 product

Xie Lingyun Hsieh Ling-yün (385-433), Duke of K'ang-lo, was a Chinese poet. An aristocrat of philosophic temper, he was China's first systematic nature poet to explore the mountains and gorges of South China and write poems about them. Hsieh Ling... Study Pack: 1 Biography About 2 pages (605 words) in 1 product

X-inactivation X chromosome inactivation, also called the Lyon hypothesis, is a phenomenon that occurs in every female mammal that has the double X chromosome configuration. Based on her own work on mice with mottled coats, Mary F. Lyon of the Medical Re... Study Pack: 1 Summary About 8 pages (2,272 words) in 1 product

Xinhai Revolution By the end of the nineteenth century, nearly every political and intellectual leader in China saw the need for change. Some, such as Sun Yat-sen (1866–1925), felt that rather than reforming the imperial system, China needed a thorou... Study Pack: 1 Summary About 43 pages (12,882 words) in 1 product

Xinjiang (2002 pop. 19.0 million). Located in northwestern China, the Uighur Autonomous Region of Xinjiang is bordered by Mongolia to the northeast; the Chinese provinces of Qinghai and Gansu to the east; the Tibetan Autonomous Region to the southe... Study Pack: 1 Summary About 22 pages (6,542 words) in 1 product

X-linked agammaglobulinemia X-linked agammaglobulinemia (XLA) or Bruton's agammaglobulinemia is present at birth (congenital) and is characterized by low or completely absent levels of immunoglobulins in the bloodstream. Immunoglobulins are protein molecules in blood... Study Pack: 1 Summary About 7 pages (2,040 words) in 1 product

X-Men The X-Men is the most popular team of superheroes in comic books in the 1990s. Featuring an often changing lineup of young mutant superheroes and unusually complex story lines, the X-Men have found a consistently large and loyal audience o... Study Pack: 1 Summary About 24 pages (7,316 words) in 1 product

Xochimilco Xochimilco Xochimilco is one of Mexico's most magnificent cities. In the Aztec's Náhuatl language, the name Xochimilco means "garden of flowers." The name describes the city perfectly because its streets and roo... Study Pack: 1 Essay About 10 pages (3,038 words) in 1 product

XPD [XPD deals with the] hardly original notion of modern spies and Nazi leftovers—in this case, some incriminating documents, part of a Nazi treasure-hoard some of which was spirited away by American GIs. Today they could seriously embarrass... Study Pack: 4 Criticisms About 6 pages (1,656 words) in 4 products

X-ray X rays are a form of high-energy electromagnetic radiation. Electromagnetic radiation, or light energy, occurs as a continuous gradient, or spectrum, of forms. Exhibiting wave-like properties, the electromagnetic spectrum consists of light... Study Pack: 3 Summaries About 24 pages (7,211 words) in 3 products

X-ray astronomy X-ray astronomy is a product of the space age, and is one of the fastest-growing fields of astronomy. It involves not only X-ray stars, but galaxies, pulsars, quasars, and black holes as well. X-rays had been discovered quite by accident i... Study Pack: 1 Summary About 8 pages (2,398 words) in 1 product

X-ray crystallography   X-ray crystallography is an experimental technique for determining the arrangement of atoms in a crystalline material using highly energetic electromagnetic radiation. X-ray crystallography provides the most direct and accurate means of es... Study Pack: 4 Summaries About 52 pages (15,640 words) in 4 products

X-ray machine The very first X ray device was discovered accidentally by the German scientist Wilhelm Röntgen (1845-1923) in 1895. He found that a cathode-ray tube emitted certain invisible rays that could penetrate paper and wood and, the first pe... Study Pack: 2 Summaries About 10 pages (3,134 words) in 2 products

X-ray pulsar Stars radiate energy in many wavelengths. Visible light, the wavelength we see with the naked eye, is only one small part of the electromagnetic spectrum. Toward the short-wavelength end, beyond visible blue light and invisible ultraviolet... Study Pack: 1 Summary About 5 pages (1,342 words) in 1 product

Xu Beihong (1895–1953), founding father of modern Chinese painting. Born in Yixing, Jiangsu Province, China, in 1895, Xu Beihong began drawing at an early age and by 1915 was discovered selling cheap fan paintings in Shanghai and sent by a spo... Study Pack: 1 Summary About 2 pages (728 words) in 1 product

Xu Guangqi   Xu Guangqi (1562-1633) was a Chinese scholar-official, who rose to one of the highest government positions in the Ming dynasty, pioneered in the introduction of Western science and technology into China, and became one of the "Three Pillar... Study Pack: 1 Biography, 1 Summary About 13 pages (3,931 words) in 2 products

Xu Zhimo (1897–1931), modern Chinese poet. Born in Zhejiang Province, Xu Zhimo studied law at Beijing University in 1917 before attending Columbia University in the United States and then Cambridge University in England. During his stay in E... Study Pack: 1 Summary About 3 pages (757 words) in 1 product

Xuanzang   Hsüan Tsang (ca. 602-664) was the most famous Chinese Buddhist pilgrim and traveler in India and a translator of Buddhist texts. His "Hsi-yü Chi," or "Record of Western Countries," remains an indispensable source book to students... Study Pack: 1 Biography, 3 Summaries About 23 pages (6,891 words) in 4 products