Chromosome numbers and meiotic behavior of some Paspalum accessions [PDF]
, 2005 Chromosome number and meiotic behavior were evaluated in 36 Brazilian accessions of the grass Paspalum (which had never previously been analyzed) to determinate which accessions might be useful in interspecific hybridizations.
BONATO, A. B. M. +14 more
core +1 more source
Meiotic behavior in tetraploid populations of Pfaffia tuberosa (Amaranthaceae) [PDF]
, 2004 Four populations of Pfaffia tuberosa, the Brazilian ginseng, collected in the central region of the state of Rio Grande do Sul (Brazil) were cytologically analyzed for meiotic behavior.
Pagliarini, M.S. +3 more
core +1 more source
Meiotic chromosome behavior in spread preparations of yeast. [PDF]
The Journal of cell biology, 1988 Chromosome behavior in meiosis is well characterized from cytological and genetic descriptions but little is known of the underlying molecular mechanisms, largely because no one experimental system has been developed to support an integrated application of modern cytological, genetic, and molecular biological methods.
M E, Dresser, C N, Giroux
openaire +2 more sources
Abnormal meiotic behavior in three species of Crotalaria [PDF]
Pesquisa Agropecuária Brasileira, 2009 The objective of this work was to compare the meiotic behavior and pollen grain viability of three species of Crotalaria. Slides for meiotic analysis were prepared by the air-drying technique. Pollen grain viability was measured by three staining procedures (Alexander's solution, tetrazolium chloride and fluorescein diacetate) and in vitro germination ...
Ferreira, Kátia +3 more
openaire +3 more sources
Post-Meiotic Intra-Testicular Sperm Senescence in a Wild Vertebrate [PDF]
, 2012 There is growing interest in sperm senescence, both in its underlying mechanisms and evolutionary consequences, because it can impact the evolution of numerous life history traits. Previous studies have documented various types of sperm senescence, but
Richard H. Wagner +16 more
core +2 more sources
Karyotype, meiotic behavior and pollen features of Senna occidentalis
, 2010 Meiotic behavior, pollen morphology, interphasic nucleus pattern and karyotype description for Senna occidentalis (Caesalpinioideae — Fabaceae) are presented.
Giovana A. Torres +7 more
core +1 more source
How to halve ploidy : lessons from budding yeast meiosis [PDF]
, 2012 Maintenance of ploidy in sexually reproducing organisms requires a specialized form of cell division called meiosis that generates genetically diverse haploid gametes from diploid germ cells.
Kerr, Gary W. +3 more
core +1 more source
Structure of the hDmc1-ssDNA filament reveals the principles of its architecture [PDF]
, 2010 In eukaryotes, meiotic recombination is a major source of genetic diversity, but its defects in humans lead to abnormalities such as Down's, Klinefelter's and other syndromes.
Dmitry V Bugreev +23 more
core +2 more sources
Meiotic behavior and karyotypic variation in Acledra (Pentatomidae, Heteroptera)
Genetics and Molecular Research, 2010 Acledra comprises 15 taxonomically identified species, most of which are crop pests. This is the first cytogenetic study of species of this genus. Acledra kinbergii and A. modesta showed the modal number of the Pentatomidae (2n = 14 = 12 + XY), while A.
P J, Rebagliati, L M, Mola
openaire +2 more sources
On the origin of crossover interference : a chromosome oscillatory movement (COM) model [PDF]
, 2011 Background: It is now nearly a century since it was first discovered that crossovers between homologous parental chromosomes, originating at the Prophase stage of Meiosis I, are not randomly placed.
Maj A Hultén +2 more
core +1 more source