- internal fertilization
- union of the gametes inside the body of the female, the sperm having been transferred from the body of the male by an accessory sex organ or other means.
Medical dictionary. 2011.
internal fertilization
Look at other dictionaries:
Internal fertilization — is a form of animal fertilization of an ovum by spermatozoon within the body of an inseminated animal, whether female or hermaphroditic. This is distinct from external fertilization, where the union of the ova and spermatoza occur outside of the… … Wikipedia
cross-fertilization — /kraws ferr tl euh zay sheuhn, kros /, n. 1. Biol. the fertilization of an organism by the fusion of an egg from one individual with a sperm or male gamete from a different individual. 2. Bot. fertilization of the flower of one plant by a gamete… … Universalium
External fertilization — is a form of fertilization in which a zilo cell is united with an egg cell external to the body of the female. Thus, the fertilization is said to occur externally . This is distinct from internal fertilization where the union of the egg and sperm … Wikipedia
Cross-fertilization — can refer to: Allogamy, where an ovum from one individual is fertilized with the spermatozoa of another Heterosis, where different strains are cross bred to form a hybrid the union of pollen from the anther of the stamen, with the female gametes… … Wikipedia
reproductive 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… … Universalium
Spawn (biology) — The spawn (eggs) of a clownfish. The black spots are the eyes developing. Spawn refers to the eggs and sperm released or deposited, usually into water, by aquatic animals. As a verb, spawn refers to the process of releasing the eggs and sperm,… … Wikipedia
reproductive 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… … Universalium
Sexual reproduction — is the creation of a new organism by combining the genetic material of two organisms. The two main processes are: meiosis, involving the halving of the number of chromosomes; and fertilization, involving the fusion of two gametes and the… … Wikipedia
Reproductive system — The reproductive system is a system of organs within an organism which work together for the purpose of reproduction. Many non living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. [ … Wikipedia
reptile — 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… … Universalium
