Search results for "RAPD"
showing 4 items of 84 documents
RAPD evidence for a sister group relationship of the presumed progenitor-derivative species pairSenecio nebrodensis andS. viscosus (Asteraceae)
1998
The phylogenetic and phenetic analysis of 109 RAPD polymorphisms inS. nebrodensis, a perennial and self-incompatible endemic of four mountain ranges in Spain, andS. viscosus, a self-compatible annual widespread in Europe, as well asS. lividus, S. sylvaticus andS. vulgaris revealed a sister group relationship between the first two species. This result contrasts sharply with the earlier hypothesis based on isozyme variation thatS. viscosus originated from within a paraphyleticS. nebrodensis and that the two species represent a progenitor-derivative pair. After considering possible reasons for the sister group relationship found, including the possibility of rooting artefacts, it is concluded …
Detection of ephemeral genetic sub-structure in the narrow endemic Abies nebrodensis (Lojac.) Mattei (Pinaceae) using RAPD markers
2004
A. nebrodensis (Nebrodi fir, Sicilian fir) is restricted to a small area of the Madonie Natural Park in Sicily. According to recent estimates, its only population consists of 30 adult individuals and a fluctuating number of juveniles derived from natural regeneration; besides, some hundreds of cultivated plants are preserved as ex situ collection. We used RAPD data from six 10-mer primers to examine the consequences of extensive historical clearance and human pressures on the extant population. Data from multiple life stages and different habitat conditions were considered, affording an opportunity to ascertain for the first time the structure of genetic variation in the extant uneven-aged …
Molecular typing of Candida albicans isolates from patients and health care workers in a neonatal intensive care unit
2011
Aims: The aim of this study was to investigate the genetic relatedness between Candida albicans isolates and to assess their nosocomial origin and the likeliness of cross-transmission between health care workers (HCWs) and hospitalized neonates in a neonatal intensive care unit (NICU). Methods: We retrospectively analysed 82 isolates obtained from 40 neonates and seven isolates from onychomycosis of the fingers of five HCWs in a Tunisian NICU by using pulsed-field gel electrophoresis (PFGE) and randomly amplified polymorphic DNA (RAPD) analysis with CA1 and CA2 as primers. Results: In RAPD analysis, the discriminatory power (DP) of CA1 and CA2 primers was 0·86 and 0·81, respectively. A h…
Reģionālā migrācija Dienvidāzijā: Malaizijas, Indonēzijas un Bangladešas piemērs
2016
Maģistra darba “Reģionālā migrācija Dienvidāzijā: Malaizijas, Indonēzijas un Bangladešas piemērs” mērķis bija analizēt migrācijas politikas šajās valstīs, pētot migrācijas cēloņus, analizējot darba migrāciju, valstu valdību un migrācijas politikā iesaistīto institūciju lomai, kā arī ietekmei uz valstu ekonomikām. Racionālās izvēles institucionālisms un migrācijas teorija tika izvēlētas, lai uzsvērtu darba migrācijas ietekmi uz migrāciju, pierādīt, ka migrācija tiek regulēta institucionāli. Metodoloģiski izmantoju deskriptīvo analīzi, pateicoties kurai tika pierādīts, ka īstermiņa darba migrācija labvēlīgi ietekmē abu valstu ekonomikas (fiskālie ieguvumi, darba tirgu līdzsvars), tika konstat…