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Meiotic abnormalities in infertile males [PDF]
Cytogenetic and Genome Research, 2005 Meiotic anomalies, as reviewed here, are synaptic chromosome abnormalities, limited to germ cells that cannot be detected through the study of the karyotype. Although the importance of synaptic errors has been underestimated for many years, their presence is related to many cases of human male infertility.
Egozcue, Josep +8 more
openaire +4 more sources
Recurrence of multiple meiotic abnormalities in maize genotypes from the same origin and their influence on productivity [PDF]
Crop Breeding and Applied Biotechnology, 2002 The frequency of meiotic abnormalities among single-, double- and three-way cross experimental hybrids and their parental inbred lines is studied. Among the sixteen inbred lines examined, fifteen originated from populations developed at the National ...
Maria Suely Pagliarini +3 more
doaj +2 more sources
Chromosome numbers and meiotic behavior of some Paspalum accessions [PDF]
Genetics and Molecular Biology, 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.
Eleniza de Victor Adamowski +4 more
doaj +2 more sources
Meiotic analysis in induced tetraploids of Brachiaria decumbens Stapf [PDF]
Crop Breeding and Applied Biotechnology, 2011 The meiotic behavior of three tetraploid plants (2n=4x=36) originated from somatic chromosome duplication of sexually reproducing diploid plants of Brachiaria decumbens was evaluated. All the analyzed plants presented abnormalities related to polyploidy,
Carine Simioni, Cacilda Borges do Valle
doaj +10 more sources
Use of a unique reporter cassette to examine 5´ to 3´ resection at a site specific DNA double-strand break during meiosis [PDF]
, 2006 Meiotic recombination in Saccharomyces cerevisiae is initiated by the formation of DNA double strand breaks (DSBs), which are created by Spoil protein.
Bishop-Bailey, Anna
core +6 more sources
Meiotic drive and evolution of female choice [PDF]
, 1999 Reinhold K, Engqvist L, Misof B, Kurtz J. Meiotic drive and evolution of female choice. Proceedings of the Royal Society B. 1999;266(1426):1341-1345.As a special version of the good-genes hypothesis, it was recently proposed that females could benefit ...
Reinhold, Klaus +11 more
core +1 more source
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
“Meiotic abnormality in dominant genic male sterile Brassica napus” [PDF]
Molecular Biology, 2008 Rs1046AB is a dominant genic male sterile (DGMS) Brassica napus line derived from Yi-3A. Until now the molecular mechanism of its male sterility is still unknown. In this paper, cytological observations demonstrated that all cells in sterile plants contained condensed nuclei at the beginning stage of meiosis; this implied that meiotic cells were ...
J. Y. Wu, G. S. Yang
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Effects of 5α-dihydrotestosterone and 17β-estradiol on the mouse ovarian follicle development and oocyte maturation. [PDF]
PLoS ONE, 2014 We have previously reported that androstenedione induces abnormalities of follicle development and oocyte maturation in the mouse ovary. In granulosa cells of the ovarian follicle, androstenedione is aromatized to 17β-estradiol (E2). To determine whether
Wataru Tarumi +2 more
doaj +1 more source
Apoptosis in mouse fetal and neonatal oocytes during meiotic prophase one [PDF]
, 2007 Background The vast majority of oocytes formed in the fetal ovary do not survive beyond birth. Possible reasons for their loss include the elimination of non-viable genetic constitutions arising through meiosis, however, the ...
Geraldine M Hartshorne +5 more
core +1 more source