Results 41 to 50 of about 88,719 (358)

Diâmetro dos grãos de pólen e tamanho dos estômatos em acessos diplóides e tetraplóides de Hemarthria altissima (Poiret) Stapf & Hubbard (Gramineae) Pollen grain diameter and stomatal size in diploid and tetraploid accessions of Hemarthria altissima (Poiret) Stapf & Hubbard (Gramineae)

Ciência Rural, 1999
Sete acessos da gramínea forrageira Hemarthria altissima, diplóides e tetraplóides africanos e tetraplóides brasileiros, foram analisados com fins de caracterizar, nos diferentes níveis de ploidia, os parâmetros diâmetro dos grãos de pólen e tamanho dos ...
Solange Bosio Tedesco, Alice Battistin, José Francisco Montenegro Valls   +2 more
doaj   +1 more source

Maintenance and variation of chromosome ploidy under tissue culture conditions of different Camellia germplasms

Guangxi Zhiwu
The maintenance and variation of ploidy in plants are influenced by environmental factor, and the tissue culture regeneration can often cause changes of chromosome structures and ploidy levels.
LI Yaxuan1,2, LI Xinlei1, LI Jiyuan1, YIN Hengfu1*
doaj   +1 more source

Dosage Sensing, Threshold Responses, and Epigenetic Memory: A Systems Biology Perspective on Random X‐Chromosome Inactivation

, 2020
X‐chromosome inactivation ensures dosage compensation between the sexes in mammals by randomly choosing one out of the two X chromosomes in females for inactivation.
Barr M. L., Comings D. E., Delbrück M., Rastan S., Rosspopoff O.   +4 more
core   +1 more source

Adaptation to high ethanol reveals complex evolutionary pathways [PDF]

, 2015
Tolerance to high levels of ethanol is an ecologically and industrially relevant phenotype of microbes, but the molecular mechanisms underlying this complex trait remain largely unknown.
Arslan, Ahmed, Das, Anupam, De Maeyer, Dries, DeLuna, Alexander, Espinosa-Cantú, Adriana, Jelier, Rob, Kominek, Jacek, Marchal, Kathleen, Meert, Wim, van der Zande, Elisa, Van Noort, Vera, Van Pee, Michiel, Verstrepen, Kevin J, Voordeckers, Karin, Yang, Yudi, Zhu, Bp   +15 more
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Multicolour interphase cytogenetics: 24 chromosome probes, 6 colours, 4 layers [PDF]

, 2011
From the late 1980s onwards, the use of DNA probes to visualise sequences on individual chromosomes (fluorescent in-situ hybridisation - FISH) revolutionised the study of cytogenetics.
A.R. Thornhill, Abruzzo, Arnold, Camps, Celeda, Cremer, D. Ioannou, D.K. Griffin, Dauwerse, DeSilva, E.J. Meershoek, Egozcue, Emmerich, Ersfeld, Fiegler, Finch, Finch, Foster, Gabriel, Griffin, Griffin, Griffin, Griffin, Griffin, Handyside, Harper, Harper, Harton, Jauch, Julien, Kallioniemi, Kearns, Kolluri, Langer, Lichter, M. Ellis, Mann, Matsuzaki, Muller, Munne, Munne, Munne, Munne, Nederlof, Nordgren, Olszewska, O’Keefe, Pinkel, Quilter, Rennstam, Roberts, Rodriguez, Rottger, Sbracia, Schardin, Schrock, Speicher, Syvanen, Tempest, Tsuchiya, Walling, Wienberg   +61 more
core   +1 more source

Embryos Arising from Apronuclear (0PN) and Unipronuclear (1PN) Have Similar Euploidy Rates with Those from 2PN and Should be Considered for Transfer

Fertility & Reproduction, 2019
Background: Fertilisation assessment is routinely made at 16–18 hours post-ICSI and 18–20 hours post-insemination. However, the absence of pronuclei (PN) during standard fertilisation assessment does not necessarily indicate fertilisation failure.
Adelle Yun Xin Lim, Colin Soon Soo Lee
doaj   +1 more source

Is Natural Population of Candida tropicalis Sexual, Parasexual, and/or Asexual?

Frontiers in Cellular and Infection Microbiology, 2021
Candida tropicalis is one of the most common opportunistic yeast pathogens of humans, especially prevalent in tropical and subtropical regions. This yeast has broad ecological distributions, can be found in both terrestrial and aquatic ecosystems ...
Jianping Xu, Jianping Xu
doaj   +1 more source

Energetic budget of diploid and triploid eastern oysters during a summer die-off

Frontiers in Marine Science, 2023
Triploid oysters are widely used in off-bottom aquaculture of eastern oysters, Crassostrea virginica. However, farmers of the Gulf of Mexico (GoM) and Atlantic coast estuaries have observed unresolved, late-spring die-offs of triploid oysters ...
Sarah Bodenstein, Sandra M. Casas, Terrence R. Tiersch, Jerome F. La Peyre   +3 more
doaj   +1 more source

Outstanding intraindividual genetic diversity in fissiparous planarians (Dugesia, Platyhelminthes) with facultative sex.

, 2019
Predicted genetic consequences of asexuality include high intraindividual genetic diversity (i.e., the Meselson effect) and accumulation of deleterious mutations (i.e., Muller’s Ratchet), among others.
Leria, L., Riutort, M., Solà, E., Vila Farre, M.   +3 more
core   +1 more source

WaveCNV: allele-specific copy number alterations in primary tumors and xenograft models from next-generation sequencing. [PDF]

, 2013
MotivationCopy number variations (CNVs) are a major source of genomic variability and are especially significant in cancer. Until recently microarray technologies have been used to characterize CNVs in genomes.
Ali, Johar, Arshadi, Niloofar, Beck, Tim, Holt, Carson, Jang, Gun Ho, Losic, Bojan, McPherson, John, Muthuswamy, Lakshmi B, Pai, Deepa, Syam, Sujata, Trinh, Quang, Zhao, Zhen   +11 more
core   +3 more sources