Gamete — The sperm or the egg. Each human gamete normally has 23 chromosomes, the haploid number of chromosomes, half the number of chromosomes contained in most types of cells. * * * 1. One of two haploid cells that can undergo karyogamy. 2. Any germ… … Medical dictionary
gamete — noun /ˈɡæmiːt/ A reproductive cell (male (sperm) or female (egg)) that has only half the usual number of chromosomes. Syn: sex cell … Wiktionary
gamete — n. a mature sex cell: the ovum of the female or the spermatozoon of the male. Gametes are haploid, containing half the normal number of chromosomes … The new mediacal dictionary
Four Gamete Test — In population genetics, the Four Gamete Test is a method for detecting historical recombination events [Statistical Properties of the Number of Recombination Events in the History of a Sample of DNA Sequences. Richard R. Hudson and Norman L.… … Wikipedia
Glossary of botanical terms — Many of the terms used in Wikipedia glossaries (often most) are already defined and explained within Wikipedia itself. However, lists like the following indicate where new articles need to be written and are also useful for looking up and… … Wikipedia
гаметангий — * гаметангій * gametangium половой орган у растений, в котором образуются гаметы, иногда (у низших растений) это недифференцированные клетки. Г., в котором возникают женские половые клетки, называют архегонием (см.), оогонием (см.) или… … Генетика. Энциклопедический словарь
heredity — /heuh red i tee/, n., pl. heredities. Biol. 1. the transmission of genetic characters from parents to offspring: it is dependent upon the segregation and recombination of genes during meiosis and fertilization and results in the genesis of a new… … Universalium
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
reproductive system, plant — Introduction any of the systems, sexual or asexual, by which plants reproduce. In plants, as in animals, the end result of reproduction is the continuation of a given species, and the ability to reproduce is, therefore, rather conservative … Universalium
Meiosis — Not to be confused with miosis, mitosis, or myositis. For the figure of speech, see meiosis (figure of speech). Events involving meiosis, showing chromosomal crossover Meiosis (pronounced /maɪˈoʊsɨs/ … Wikipedia
plant development — Introduction a multiphasic process in which two distinct forms succeed each other in alternating generations. One form, created by the union of sexual cells (gametes (gamete)), contains two sets of similar chromosomes (diploid). At sexual… … Universalium