Results 71 to 80 of about 30,580 (249)

Meiotic chromosome behaviour in Cenchrus ciliaris

Bothalia: African Biodiversity & Conservation, 1998
A basic chromosome number of x = 9 has been confirmed for Cenchrus ciliaris L. Polyploidy is common and levels vary from tetraploid to hexaploid. Aneuploidv is reported for a single specimen, where two chromosomes of a single genome were lost.
N. C. Visser, J. J. Spies
doaj   +1 more source

Making Two out of One: Kinesin Motors Driving Plant Cell Division

Cytoskeleton, EarlyView.
ABSTRACT The Kinesin superfamily of microtubule dependent motors is present in all eukaryotes. Not all of the subfamilies are represented in all kingdoms, and the ones that are do not always show conserved functions. Tight control of the cytoskeleton is essential for proper progression and completion of mitosis and cytokinesis, and key functions are ...
Choy Kriechbaum, Sabine Müller
wiley   +1 more source

Meiotic behavior of wild Caricaceae species potentially suitable for papaya improvement

Crop Breeding and Applied Biotechnology, 2012
The purpose of this study was to evaluate the meiotic behavior and determine the meiotic index and pollen viability of representative plants of the wild species V. goudotiana, V. quercifolia and J. spinosa. Meiotic analysis confirmed that the species are
Emanuelli Narducci da Silva, Monique Freitas Neto, Telma N. S. Pereira, Messias G. Pereira   +3 more
doaj  

In Vitro Live Cell Imaging Reveals Nuclear Dynamics and Role of the Cytoskeleton During Asymmetric Division of Pollen Mitosis I in Nicotiana Benthamiana

Cytoskeleton, EarlyView.
ABSTRACT Pollen is a male gametophyte of angiosperms. Following meiosis, the microspore undergoes an asymmetric division called pollen mitosis I (PMI), which produces two cells of different sizes: a large vegetative cell and a small generative cell. Polarized nuclear migration and positioning during PMI are important for successful pollen development ...
Yoko Mizuta, Masako Igarashi, Tomomi Shinagawa, Ikuma Kaneshiro, Haoto Anan, Daisuke Kurihara   +5 more
wiley   +1 more source

Assessment of Molecular Cytogenetic Methods for the Detection of Chromosomal Abnormalities [PDF]

, 2006
Some marker chromosomes and chromosome rearrangements are difficult to identify using G-bands by Giemsa staining after trypsin treatment (G-banding) alone.
Maruyama, Hidehiko, Morishima, Tsuneo, Ninomiya, Shinsuke, Shinozuka, Masako, Une, Tomoka, Yokoyama, Yuji   +5 more
core   +1 more source

Diversity and abundance of the abnormal chromosome 10 meiotic drive complex in Zea mays [PDF]

Heredity, 2013
Maize Abnormal chromosome 10 (Ab10) contains a classic meiotic drive system that exploits asymmetry of meiosis to preferentially transmit itself and other chromosomes containing specialized heterochromatic regions called knobs. The structure and diversity of the Ab10 meiotic drive haplotype is poorly understood.
Kanizay, Lisa B., Pyhäjärvi, Tanja, Lowry, Elizabeth G., Hufford, Matthew B., Peterson, Daniel G., Ross-Ibarra, Jeffrey, Dawe, R. Kelly   +6 more
openaire   +3 more sources

The Influence of Drosophila Spire and Myosin V During Mid‐Oogenesis Is Independent of Their Direct Interaction

Cytoskeleton, EarlyView.
ABSTRACT Cooperativity between cytoskeletal proteins is crucial for spatiotemporal coordination in biological processes, like oogenesis. In mammalian and Drosophila oogenesis, proper assembly and function of actin networks require coordination between actin assembly factors Spire and formins, as well as actin‐associated proteins like myosins and Rab ...
Joseph Y. Ong, Hannah M. Bailey, Emma Carley, Michelle Panzica, Merin Rixen, Neil Billington, Rong Liu, Margot E. Quinlan   +7 more
wiley   +1 more source

Effects of endogamy on microsporogenesis in popcorn

Crop Breeding and Applied Biotechnology, 2007
Inbred lines are necessary for the development of popcorn hybrids. Genes for several traits, among them those related to the meiotic process, approach homozygosis during inbreeding.
Maria Suely Pagliarini, Maria Fernanda Piffer Tomasi Baldez da Silva, Eraldo Ferreira Lopes, Carlos Alberto Scapim   +3 more
doaj  

Unraveling the meiotic puzzle: chromosome count, meiotic behaviour, and reproductive challenges in Phlomis cashmeriana Royle ex Benth. from the Kashmir Himalaya

Frontiers in Conservation Science
Meiotic stability is crucial for maintaining reproductive success and genetic diversity in plants, especially in montane regions like the Himalaya, where fluctuating environmental conditions can disrupt normal chromosome behavior.
Roof Ul Qadir, Hanan Javid, Aijaz Hassan Ganie, Bilal A. Wani, Irshad A. Nawchoo, Junaid A. Magray   +5 more
doaj   +1 more source

Meiotic abnormalities in metaphase I human spermatocytes from infertile males: frequencies, chromosomes involved, and the relationships with polymorphic karyotype and seminal parameters

Asian Journal of Andrology, 2014
The aim of this study was to look in depth at the relationship between meiotic anomalies and male infertility, such as the determination of the chromosomes involved or the correlation with patient features.
Zaida Sarrate, Francesca Vidal, Joan Blanco   +2 more
doaj   +1 more source