Ag-NOR and C-banding analysis of spermatocyte chromosomes ofClavelina lepadiformis(Ascidiacea, Aplousobranchiata)
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چکیده
منابع مشابه
Karyotyping, C- and nor Banding of Allium Sativum L. (liliaceae) Cultivated in Turkey
The cytological features including chromosome number, karyotypic characteristics, C-banding and silver NOR-banding were investigated in a local cultivar of Allium sativum L., from Turkey. Actual lengths, relative lengths, L/S arm ratios of mitotic chromosomes were calculated from best six metaphase plates. Only Chromosome 5 was submedian, all the others were median. C-banding was observed on 4 ...
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Feulgen bands can be obtained at the sites of constitutive heterochromatin in the chromosomes of Anemone blanda, Fritillaria lanceolata and Scilla siberica, simply by means of a short or extended acid hydrolysis. Extended hydrolysis gives positive bands in A. blanda and F. lanceolata and negative bands in S. siberica. Short hydrolysis gives no bands in A. blanda and S. siberica but gives negati...
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Individual pairs of human chromosomes can be reliably identified by a new method that does not require special optical equipment and that results in permanent preparations. This method, which is based on treatment of the chromosomes in situ with NaOH, followed by incubation in sodium chloride-trisodium citrate and Giemsa staining, results in highly specific banding patterns in characteristic re...
متن کاملFirst report on C-banding, fluorochrome staining and NOR location in holocentric chromosomes of Elasmolomus (Aphanus) sordidus Fabricius, 1787 (Heteroptera, Rhyparochromidae)
In spite of various cytogenetic works on suborder Heteroptera, the chromosome organization, function and its evolution in this group is far from being fully understood. Cytologically, the family Rhyparochromidae constitutes a heterogeneous group differing in chromosome numbers. This family possesses XY sex mechanism in the majority of the species with few exceptions. In the present work, multip...
متن کاملKaryotype and C-Banding Patterns of Mitotic Chromosomes in Diploid Bromegrass (Bromus riparius Rehm)
nomic relationships among species (Vosa, 1975; Cai and Chinnappa, 1987; Fominaya et al., 1988; Gill and Sears, Previous cytogenetic studies of the genus Bromus L. were limited 1988; Tayyar et al., 1994; Falistocco et al., 1995). The to chromosome counts and construction of karyotypes on the basis of Feulgen staining. Since the chromosomes of Bromus are similar in C-banding procedure has not bee...
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ژورنال
عنوان ژورنال: Caryologia
سال: 1991
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.1991.10797200