Zobrazeno 1 - 10
of 445
pro vyhledávání: ''
Autor:
Monique Telcia dos Santos Damasceno, Gisele Amaro Teixeira, Paulo Castro Ferreira, Rodrigo Batista Lod, Luísa Antônia Campos Barros, Hilton Jeferson Alves Cardoso de Aguiar
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 105-122 (2024)
Recently, hypotheses regarding the evolutionary patterns of ribosomal genes in ant chromosomes have been under discussion. One of these hypotheses proposes a relationship between chromosomal location and the number of rDNA sites, suggesting that term
Externí odkaz:
https://doaj.org/article/3405d1e99aff4a8886cf8ac743b8a941
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 97-103 (2024)
The current study analyzed the chromosomal karyotype of Quasipaa spinosa David, 1875 from Hunan Province, China. The karyotype, C-banding, BrdU-banding pattern were characterized using direct preparation of bone-marrow cells and hemocyte cultures. Th
Externí odkaz:
https://doaj.org/article/228aeff0255240a8899ec04f99755034
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 73-95 (2024)
To characterize the chromosomes of the four species of Polygonatum Miller, 1754, used in traditional Chinese medicine, P. cyrtonema Hua, 1892, P. kingianum Collett et Hemsley, 1890, P. odoratum (Miller, 1768) Druce, 1906, and P. sibiricum Redouté, 1
Externí odkaz:
https://doaj.org/article/1007fc1005af430191665612c0d72a0b
Autor:
Natália Padilha de Oliveira, Gabriel de Siqueira Gesteira, Maria do Socorro Padilha de Oliveira, Lisete Chamma Davide
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 59-72 (2024)
The genus Oenocarpus Martius, 1823 (Arecaceae) includes five species commonly used in Amazonia, especially for their fruits. Little is known about the cytogenetic characteristics and DNA amounts of these species, except for O. bataua (Martius, 1823).
Externí odkaz:
https://doaj.org/article/3d3ff1a588ef446d87c1c40101732ac2
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 51-57 (2024)
Polyploidy is a condition in which a cell has multiple diploid sets of chromosomes. Two forms of polyploidy are known. One of them, generative polyploidy, is characteristic of all cells of the organism, while the other form develops only in some soma
Externí odkaz:
https://doaj.org/article/b22ca96698a5477cb4f0941fe10c3e10
Autor:
Andrey Grishanin
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 27-49 (2024)
This work reveals the opportunities to obtain additional information about some biological problems through studying species that possess chromatin diminution. A brief review of the hypothesized biological significance of chromatin diminution is disc
Externí odkaz:
https://doaj.org/article/de7803575f34486398d5501c37ae5d68
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 15-26 (2024)
This study provides data on chromosome number (2n♂♀=26), sex determination mechanism (XY♂/XX♀), C-banding pattern, distribution of clusters of telomeric TTAGG repeats and 18S ribosomal DNA in the karyotype of the stonefly Skwala compacta (McL
Externí odkaz:
https://doaj.org/article/3689fa7484454d7fa2f462b9a106fe25
Autor:
Ziravard N. Tonyan, Irina L. Puppo, Alsu F. Saifitdinova, Tatyana V. Vavilova, Andrey S. Glotov
Publikováno v:
Comparative Cytogenetics, Vol 18, Iss , Pp 1-13 (2024)
Patterns of meiotic chromosome segregation were analyzed in cleavage stage and blastocyst stage human embryos from couples with autosomal reciprocal translocations (ART). The influence of quadrivalent asymmetry degree, the presence of terminal breakp
Externí odkaz:
https://doaj.org/article/b7c660bcebb44a46adb10352c2d97f4c
Autor:
Robert B. Angus
Publikováno v:
Comparative Cytogenetics, Vol 17, Iss , Pp 295-326 (2023)
An account is given of my development of techniques to obtain well-spread Giemsa-stained banded chromosome preparations. Apparent G-banding could be obtained following very slight trypsin treatment of freshly prepared slides, but this banding was ver
Externí odkaz:
https://doaj.org/article/4b0e1d858aec43059b6ff1c5ba50e305
Autor:
Vladimir E. Gokhman
Publikováno v:
Comparative Cytogenetics, Vol 17, Iss , Pp 327-333 (2023)
Results of the chromosome study of 12 sawfly species of the genus Arge Schrank, 1802 are reviewed, including new data on the karyotypes of A. ciliaris (Linnaeus, 1767) and A. enodis (Linnaeus, 1767) with n = 10. Moreover, the same chromosome number,
Externí odkaz:
https://doaj.org/article/3ca86411176a41c0a40fc194fa66deb4