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fertilization

(Encyclopedia)CE5 Fertilization of an egg cell fertilization, in biology, process in the reproduction of both plants and animals, involving the union of two unlike sex cells (gametes), the sperm and the ovum, f...

parthenogenesis

(Encyclopedia)parthenogenesis pärˌthənōjĕnˈəsĭs [key] [Gr.,=virgin birth], in biology, a form of reproduction in which the ovum develops into a new individual without fertilization. Natural parthenogenesis ...

Sulston, Sir John Edward

(Encyclopedia)Sulston, Sir John Edward, 1942–2018, British molecular biologist, Ph.D. Cambridge, 1966. He was staff scientist at the MRC Laboratory of Molecular Biology in Cambridge, England, from 1969 to 1992, w...

Jeju

(Encyclopedia)Jeju or Cheju jāˈjo͞o [key], Jap. Saishu, island and province of South Korea (1995 pop. 505,442), c.700 sq mi (1,810 sq km), c.60 mi (100 km) SW of the Korean peninsula. Korea's largest island, Jej...

Arlington, county, United States

(Encyclopedia)Arlington, county (2020 pop. 238,643), N Va., across the Potomac River from Washington, D.C. Arlington is a residential and commercial suburb of Washington. Within its boundaries are Arlin...

Manila hemp

(Encyclopedia)Manila hemp, the most important of the cordage fibers. It is obtained chiefly from the Manila hemp plant (Musa textilis) of the family Musaceae (banana family). It is grown mainly in its native Philip...

Hirohito

(Encyclopedia)Hirohito hērōˈhētō [key], 1901–89, emperor of Japan. He was made regent in 1921 and succeeded his father, Yoshihito (the Taishō emperor), in 1926. He married (1924) Princess Nagako Kuni (1903�...

gutta-percha

(Encyclopedia)gutta-percha gŭtˈə-pûrˈchə [key], natural latex obtained from Palaquium gutta and several other evergreen trees of East Asia. The latex, collected by felling or girdling the tree, is allowed to ...

geochemistry

(Encyclopedia)geochemistry, study of the chemical changes on the earth. More specifically, it is the study of the absolute and relative abundances of chemical elements in the minerals, soils, ores, rocks, water, an...

Juan Fernández

(Encyclopedia)Juan Fernández hwän fārnänˈdās [key], group of small islands, S Pacific, c.400 mi (640 km) W of Valparaiso, Chile. They belong to Chile and are constitutionally a special territory; they are adm...