Geographical Karyotypic Variations and Chromosome Banding Patterns inTropidurus Hispidus(Sauria, Iguanidae) from Brazil
نویسندگان
چکیده
منابع مشابه
patterns and variations in native and non-native interlanguage pragmatic rating: effects of rater training, intercultural proficiency, and self-assessment
although there are studies on pragmatic assessment, to date, literature has been almost silent about native and non-native english raters’ criteria for the assessment of efl learners’ pragmatic performance. focusing on this topic, this study pursued four purposes. the first one was to find criteria for rating the speech acts of apology and refusal in l2 by native and non-native english teachers...
15 صفحه اولKaryotype Analysis and Chromosome Banding
Nearly all methods of chromosome banding rely on harvesting chromosomes in mitosis. This is usually achieved by treating cells with tubulin inhibitors, such as colchicine or demecolcine (colcemid), that depolymerize the mitotic spindle and so arrest the cell at this stage. Excessively long incubations with Colcemid result in overcondensed chromosomes that band poorly and moreover some cell type...
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Meiotic chromosomes obtained from members of the coleopteran subfamilies Geotrupinae and Dynamopinae were studied using standard and C-banding techniques. The study presents detailed karyotypic description of two Geotrupinae species viz. Bolboceras indicum Westw. and Bolboceras quadridens F. and one Dynamopinae species, Dynamopus athleta Sem. with special emphasis on the distribution and variab...
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Abstract A karyotypic study was performed on 12 Iranian local onion (Allium cepa L.) populations. A number of mitotic cells at metaphase stage for each population were prepared. Chromosomes of suitable mitotic cells were counted and various parameters, including long arm (L), short arm (S), total length of chromosome (TL), relative length of chromosome (RL), arm ratio (AR), r-value, total chro...
متن کاملMortality rates from multiple sclerosis: geographical and temporal variations revisited.
A review of the United Kingdom (UK) multiple sclerosis (MS) literature suggests that over the last three decades prevalence and estimated incidence rates have increased, while mortality rates have been declining. UK mortality data over a 30 year period have been studied to examine temporal and geographical variations, to estimate changes in survival, and to examine the relationship between mort...
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ژورنال
عنوان ژورنال: Caryologia
سال: 1987
ISSN: 0008-7114,2165-5391
DOI: 10.1080/00087114.1987.10797808