Copulation
101reproductive behaviour — In animals, any activity directed toward perpetuation of a species. Sexual reproduction, the most common mode, occurs when a female s egg is fertilized by a male s sperm. The resulting unique combination of genes produces genetic variety that… …
102reproductive system, animal — Introduction any of the organ systems by which animals reproduce. The role of reproduction is to provide for the continued existence of a species; it is the process by which living organisms duplicate themselves. Animals compete with… …
103reptile — reptilelike, adj. reptiloid /rep tl oyd /, adj. /rep til, tuyl/, n. 1. any cold blooded vertebrate of the class Reptilia, comprising the turtles, snakes, lizards, crocodilians, amphisbaenians, tuatara, and various extinct members including the… …
104AZOÏQUES — On nomme «azoïques» les composés organiques caractérisés par le groupe fonctionnel azo (face=F0019 漣 N=N 漣) unissant deux radicaux alkyle ou aryle identiques ou non (azoïques symétriques et dissymétriques). Le groupe azo peut être répété dans une …
105Sexual intercourse — Intromission redirects here. For other uses, see Intromission (disambiguation). Making love redirects here. For other uses, see Making love (disambiguation) …
106Animal sexual behaviour — This article is about the sexual behaviour of non human animals; see also Human sexuality and Sexual reproduction. Animal sexual behaviour takes many different forms, even within the same species. Among animals other than humans, researchers have …
107Canine reproduction — This article is about a social behavior of domestic dogs. For social behaviors of other canids, see Category:canids. Canine reproduction is a social behavior of the domestic dog. Contents 1 Canine sexual anatomy and development 1.1 General 1.2… …
108Compétition spermatique — Dans la nature, l’apparente extravagance des traits arborés par les mâles de certaines espèces, et leur sous jacent impact sur leur survie, inspira Darwin[1] dans le développement de la théorie de la sélection sexuelle. Un siècle plus tard, les… …
109charadriiform — ▪ bird order Introduction any member of the large group of birds (bird) that includes the sandpipers (sandpiper), plovers (plover), gulls (gull), auks (auk), and their relatives. These birds form an important and familiar segment of the… …
110sexual intercourse — genital contact, esp. the insertion of the penis into the vagina followed by orgasm; coitus; copulation. [1790 1800] * * * or coitus or copulation Act in which the male reproductive organ enters the female reproductive tract (see reproductive… …
