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Animal genomes under the focus of cytogenetics
(2011-12-01)
Decades before the recent advances in molecular biology and the knowledge of the complete nucleotide sequence of several genomes, cytogenetic analysis provided the first information concerning the genome organization. The ...
Cytogenetic studies of Mastacembelus armatus (Pisces, Mastacembelidae)
(1997-12-01)
The mitotic chromosomes, nucleolus organizer regions (NORs), C-banding pattern and nuclear DNA content of Mastacembelus armatus were studied. The karyotype (2n = 48; 10m + 6sm + 4st + 28a) was characterized by the presence ...
Cytogenetics and embryology of Eupatorium laevigatum (Compositae)
(Sociedade Brasileira de Genética, 2005-03-01)
Embryological studies indicate Eupatorium laevigatum to have Antennaria type diplospory with precocious embryony. The embryo sac is of the Polygonum type and the polar nuclei fuse before anthesis (maturation of the stamens). ...
Cytogenetic studies on holocentric chromosomes of five species of triatomines (Heteroptera: Reduviidae)
(1997-12-01)
The chromosome number and meiotic cycle of triatomines were investigated. All five species presented the same diploid chromosome number, 2n = 22 (20A + XY in the male). Phylogenetic relationships based on chromosomal ...
Cytogenetic studies on holocentric chromosomes of five species of triatomines (Heteroptera: Reduviidae)
(Faculty Press, 1997-01-01)
The chromosome number and meiotic cycle of triatomines were investigated. All five species presented the same diploid chromosome number, 2n = 22 (20A + XY in the male). Phylogenetic relationships based on chromosomal ...
Cytogenetics and embryology of Eupatorium laevigatum (Compositae)
(Sociedade Brasileira de Genética, 2005-03-01)
Embryological studies indicate Eupatorium laevigatum to have Antennaria type diplospory with precocious embryony. The embryo sac is of the Polygonum type and the polar nuclei fuse before anthesis (maturation of the stamens). ...
Molecular cytogenetic analysis of heterochromatin in the chromosomes of tilapia, Oreochromis niloticus (Teleostei : Cichlidae)
(Kluwer Academic Publ, 1998-04-01)
The structure of the heterochromatic bands in mitotic chromosomes of the important tropical aquaculture species of tilapia, Oreochromis niloticus, was investigated by the combination of the C-banding technique, chromosomal ...