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Gene copy number and differential gene expression in haploid and diploid males of the stingless bee, Melipona quadrifasciata
(SPRINGER BASEL AGBASEL, 2012)
Complementary sex determination in Hymenoptera implies that heterozygosity at the sex locus leads to the development of diploid females, whereas hemizygosity results in haploid males. Diploid males can arise through ...
Location of 45S Ribosomal Genes in Mitotic and Meiotic Chromosomes of Buthid Scorpions
(Zoological Soc Japan, 2014-09-01)
Buthid scorpions exhibit a high variability in diploid number within genera and even within species. Cytogenetically, Buthidae differs from other families of Scorpiones based on its low diploid numbers, holocentric ...
Fabaceae
(International Association for Plant Taxonomy, 2013-12)
In the present study 19 populations belonging to 8 species of the genus Lathyrus L. were examined cytologically. Seven of these species belong to the South American section, Notolathyrus and other species is included in ...
Modelagem da dinâmica de machos diplóides: efeitos do número de alelos, dispersão por passeio aleatório e estruturação espacial simples
(2018-09-26)
Insetos na ordem Hymenoptera, como vespas, formigas e abelhas, exibem um sistema haplodiplóide de determinação sexual em que as fêmeas se originam de ovos fecundados e os machos de ovos não fecundados. As fêmeas são diplóides ...
Chromosome evolution in fishes: a new challenging proposal from Neotropical species
(Sociedade Brasileira de Ictiologia, 2014-12-01)
We present a database containing cytogenetic data of Neotropical actinopterygian fishes from Venezuela obtained in a single laboratory for the first time. The results of this study include 103 species belonging to 74 genera ...
Growth, fatty acid composition, and reproductive parameters of diploid and triploid yellowtail tetra Astyanax altiparanae
(Elsevier B.V., 2017-03-20)
The aim of this study was to evaluate the growth, carcass yield, fatty acid composition, and reproductive parameters of diploid and triploid Astyanax altiparanae. Triploidization was induced by heat shock (40 degrees C for ...
Análise citogenética de escorpiões da fauna brasileira com ênfase nas sequências de DNA repetitivo
(Universidade Federal de São Paulo, 2017-03-24)
In this work, 10 scorpions species were analyzed analyzed, aiming to understand processes involved in the origin and maintenance of interspecific and intraspecific chromosomal variability and the mechanisms related to the ...
Evidence of the occurrence of structural chromosome changes at the initial diploid diversification of the autopolyploid turnera sidoides l. (passifloraceae) complex
(Natl research council Canada-n R C research press, 2015)
Turnera sidoides is an autopolyploid complex of obligate outcrossing perennial herbs. It includes five subspecies and five morphotypes in which diploid to octoploid cytotypes were found. Based on phenetic analyses of the ...