gametic chromosome number

См. также в других словарях:

• reduction — 1. The restoration, by surgical or manipulative procedures, of a part to its normal anatomic relation. SYN: repositioning (2). 2. In chemistry, a reaction involving a gain of one or more electrons by a substance, such as when iron …   Medical dictionary

• reduction — noun Etymology: Middle English reduccion restoration, from Middle French reducion, from Late Latin & Latin; Late Latin reduction , reductio reduction (in a syllogism), from Latin, restoration, from reducere Date: 15th century 1. the act or… …   New Collegiate Dictionary

• syndiploidy — (ˈ)sin, sən+ noun Etymology: syn + diploidy : doubling of the gametic chromosome number by reassociation of the daughter groups of meiotic chromosomes at any time after the first meiotic metaphase …   Useful english dictionary

• polyhaploid — I. |pälē, lə̇+ adjective Etymology: poly + haploid : of, relating to, or constituting the gametic chromosome number of a polyploid individual II. “+ noun : a polyhaploid cell or individual * * * polyhaploid see poly …   Useful english dictionary

• evolution — evolutional, adj. evolutionally, adv. /ev euh looh sheuhn/ or, esp. Brit., /ee veuh /, n. 1. any process of formation or growth; development: the evolution of a language; the evolution of the airplane. 2. a product of such development; something… …   Universalium

• Karyotype — A karyotype is the number and appearance of chromosomes in the nucleus of an eukaryotic cell. The term is also used for the complete set of chromosomes in a species, or an individual organism.[1][2]p28[3] Karyotypes describe the number of… …   Wikipedia

• Hybrid (biology) — In biology and specifically, genetics, the term hybrid has several meanings, all referring to the offspring of sexual reproduction.[1] In general usage, hybrid is synonymous with heterozygous: any offspring resulting from the mating of two… …   Wikipedia

• Asexual reproduction — in liverworts: a caducous phylloid germinating Asexual reproduction is a mode of reproduction by which offspring arise from a single parent, and inherit the genes of that parent only, it is reproduction which does not involve meiosis, ploidy… …   Wikipedia

• 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

• endopolyploidy — The net result of endomitoses. The somatic chromosome number has doubled (or more), forming a polyploid cell line. If these differentiate into a germ line, then the gametic number will have also increased proportionately, giving rise to… …   Glossary of Biotechnology

• reduction division — The first division of meiosis in which the chromosome number is reduced from the somatic to the gametic number …   Glossary of Biotechnology