Results 11 to 20 of about 1,584 (145)
Estádio da meiose do micrósporo como marcador do final da endodormência em pessegueiro
Revista Brasileira De Fruticultura, 2002 O objetivo deste trabalho foi testar a validade da técnica da meiose polínica como marcador do final da endodormência em pessegueiro, em condições de inverno subtropical.
Idemir Citadin +2 more
exaly +3 more sources
Uso de um inventário de conceitos de meiose para identificar concepções alternativas entre calouros e licenciandos de Ciências Biológicas [PDF]
Ciência & Educação, 2023 Resumo A meiose é considerada um tópico persistentemente difícil para estudantes de diferentes níveis de ensino, sendo objeto de muitos relatos de entendimentos incorretos e concepções alternativas.
Adlane Vilas-Boas +1 more
exaly +3 more sources
A Fragilidade do Ensino da Meiose [PDF]
Ciência & Educação, 2020 Resumo: Além de exigir enorme abstração, o ensino da Biologia Celular envolve temas complexos como a meiose. As implicações para o aprendizado são imensas, pois vários conteúdos de outras disciplinas, assim como aplicações tecnológicas, dependem desse ...
Sônia Aparecida Santiago +1 more
doaj +2 more sources
Epigenetic markers in the embryonal germ cell development and spermatogenesis [PDF]
Basic and Clinical Andrology, 2023 Résumé La spermatogenèse est le processus de génération de cellules reproductrices mâles à partir de cellules souches spermatogoniales, dans l’épithélium séminifère du testicule.
Amadeusz Odroniec +2 more
doaj +2 more sources
“This is where it all started” – the pivotal role of PLCζ within the sophisticated process of mammalian reproduction: a systemic review [PDF]
Basic and Clinical Andrology, 2017 Résumé La reproduction des mammifères est l’un des phénomènes biologiques les plus complexes et fascinant; son objectif est de transférer le matériel génétique maternel et paternel à la génération suivante. A la fin de l’ovogenèse et de la spermatogenèse,
Itai Gat, Raoul Orvieto
doaj +2 more sources
Die Strukturaufklärung des ersten sex‐induzierenden Pheromons einer Kieselalge
Angewandte Chemie, Volume 135, Issue 43, October 23, 2023., 2023 Die Struktur eines Sexualpheromons, welches ein β‐sulfatiertes Aspartat enthält, wurde mittels Metabolomik, Isotopenmarkierung, Massenspektrometrie und NMR‐Spektroskopie aufgeklärt. Das Peptid‐Pheromon ist in femtomolaren Konzentrationen aktiv und synchronisiert die sexuelle Paarung in der Kieselalge Seminavis robusta.
Franziska A. Klapper +4 more
wiley +1 more source
High species turnover and unique plant–pollinator interactions make a hyperdiverse mountain
Journal of Animal Ecology, Volume 92, Issue 5, Page 1001-1015, May 2023., 2023 The high diversity pollinating fauna corresponds to the hyperdiverse flora of Mt. Olympus: a bumblebee species, Bombus pascuorum, visiting the flowers of Carlina acaulis. Abstract We studied α‐ and β‐diversity of pollinators, flowering plants and plant–pollinator interactions along the altitudinal gradient of Mt.
Konstantinos Minachilis +5 more
wiley +1 more source
Developing multiscale and integrative nature–people scenarios using the Nature Futures Framework
People and Nature, Volume 2, Issue 4, Page 1172-1195, December 2020., 2020 Abstract Scientists have repeatedly argued that transformative, multiscale global scenarios are needed as tools in the quest to halt the decline of biodiversity and achieve sustainability goals. As a first step towards achieving this, the researchers who participated in the scenarios and models expert group of the Intergovernmental Science‐Policy ...
Laura M. Pereira +33 more
wiley +1 more source
Scientia Agricola, 2010 The meiotic behavior of four interspecific promising hybrids was evaluated by conventional cytological methods. The female genitors were two artificially tetraploidized sexual accessions of B.
Mariana Ferrari Felismino +2 more
doaj +1 more source
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.
Kátia Ferreira +3 more
doaj +1 more source