meiosis (maɪˈəʊsɪs) n,pl-ses(-ˌsiːz) 1.(Biology) a type of cell division in which a nucleus divides into four daughter nuclei, each containing half the chromosome number of the parent nucleus: occurs in all sexually reproducing organisms in which haploid gametes or spor...
top to bottom:In meiosis a parent cell replicates and recombines, divides once to create two daughter cells, then divides again creating four daughter cells, each of which has half the genetic content of the original parent cell. mei·o·sis ...
(c)Explain the importance of meiosis in the production of gametes. 相关知识点: 试题来源: 解析 1.halves the chromosom number2.to produce a haploid nucleus3.allows genetic variation (in gametes )4.through dependen ssortment5.through crossing over ...
Meiosis and maternal aging: insights from aneuploid oocytes and trisomy births. Cold Spring Harb. Perspect. Biol. 7, a017970 (2015). PubMed PubMed Central Google Scholar Eicher, E. M. & Washburn, L. L. Genetic control of primary sex determination in mice. Annu. Rev. Genet. 20, 327...
While meiotic recombination in plants predominantly occurs between allelic sequences along homologous chromosomes, merging of two divergent genomes in one nucleus enables transfer of genetic information between paralogous or homeologous sequences because of the reduced pairing fidelity during meiosis of nasc...
Influence of nitrogen sources on growth and mycotoxin production by isolates of Pyrenophora tritici-repentis from wheat -《The Crop Journal》 被引量:6发表:2016 Asynchronous meiosis in Cucumis hystrix–cucumber synthetic tetraploids resulting in low male fertility Y Han,J Pan,P Thammapichai-《The Cr...
Recently, ZmHSP101 was found to function in DNA double-strand breaks repair and subsequent meiosis. Overexpression of ZmHSP101 in anthers results in robust microspores with enhanced heat tolerance (Li et al. 2022c). In addition, abscisic acid-induced calcium-dependent protein kinase ZmCDPK7 ...
The ovary is an unique organ which fulfils a plethora of physiological functions ranging from its well-recognized roles in steroid hormone biosynthesis, oocyte production and the support of early pregnancy through to its rather less well-known involvemen
- 《Biology of Reproduction Offical Journal of the Society for the Study of Reproduction》 被引量: 0发表: 2003年 Acrosome biogenesis begins during meiosis: evidence from the synthesis and distribution of an acrosomal glycoprotein, acrogranin, during guinea pig spermat... The biogenesis of the ...
megagametophyte- the female gametophyte produced by the megaspore of a plant that produces both microspore and megaspores gametophyte- the gamete-bearing individual or phase in the life cycle of a plant having alternation of generations Based on WordNet 3.0, Farlex clipart collection. © 2003-20...