منابع مشابه
Evolution of microsatellites in Arabis petraea and Arabis lyrata, outcrossing relatives of Arabidopsis thaliana.
We examined microsatellite variation in two diploid, outcrossing relatives of Arabidopsis thaliana, Arabis petraea and Arabis lyrata. The primer sequences were derived from A. thaliana. About 50% (14 loci) of the A. thaliana primers could successfully amplify microsatellites in the related species. Analysis of microsatellite structure in the related species showed that there had been large chan...
متن کاملStudies on "mosaic fungus".
The so-called "mosaic fungus" is a frequent finding in the routine examinations of skin scrapings for superficial pathogenic fungi. It may be found alone or with regular mycelium, with arthrospores or with both. There is, as yet, no agreement as to the nature of the "mosaic fungus," and the investigators may be separated into two groups—those who claim that the structure is an artefact (1—4) an...
متن کاملEvolution of the Selfing Syndrome in Arabis alpina (Brassicaceae)
INTRODUCTION The transition from cross-fertilisation (outcrossing) to self-fertilisation (selfing) frequently coincides with changes towards a floral morphology that optimises self-pollination, the selfing syndrome. Population genetic studies have reported the existence of both outcrossing and selfing populations in Arabis alpina (Brassicaceae), which is an emerging model species for studying t...
متن کاملElectrophoretic Heterogeneity of the Sedimenting Components of Arabis Mosaic Virus
Electrophoretic heterogeneity in preparations of arabis mosaic virus (AMV) was due to differences in net surface charge among the sedimenting components. Bottom component migrated more rapidly than top component in polyacrylamide gels and on cellulose acetate strips. When nucleic acid was removed from bottom component the nucleic acid-free protein shell showed sedimentation and electrophoretic ...
متن کاملA demographic model explains life-history variation in Arabis fecunda
1. The distinction between semelparity and iteroparity is one of the most fundamental in life-history biology. Despite an abundance of theory proposed to explain the evolution of this dichotomy, few quantitative empirical tests exist. 2. We report here on life-history variation in the perennial herb Arabis fecunda (Brassicaceae), in which differences in the frequency of iteroparity and terminal...
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ژورنال
عنوان ژورنال: Blue Jay
سال: 1961
ISSN: 2562-5667,0006-5099
DOI: 10.29173/bluejay2321