In this study, a new chromosome number for Iranian yarrow (Achillea millefolium L.) accessions was reported. Cytological analyses on four Achillea millefolium accessions, indicated that two accessions were diploids (2n=2x=18) and two tetraploids (2n=4x=36). Cluster analysis based on chromosomal characteristics and karyotype asymmetry, categorized the four accessions separated into two groups. I...

Sixteen species of Jaborosa (Solanaceae), including eight endemic to Argentina, were studied karyologically. The numbers n = 12 and/or 2n = 24 were found in all species, the majority of the cases being new reports. Mitotic chromosomes were smallto medium-sized, the average length varying from 2.95 to 4.93 mm. All species had one to three chromosome pairs with satellites. The karyotypes, obtaine...

Phaius tankervilleae and amboinensis orchids are decorative that have high ornamental value classified as endangered plants. Genetic information from the P. will be useful for plant breeders to develop a strategy in improvement program. The aim of study was determine karyotype pattern orchids. Chromosomes obtained meristematic root tips each species were used construct idiogram squash method. r...

A traditional karyomorphological approach was carried out in order to investigate the cytotaxonomic relationships among species of Santolina chamaecyparissus complex. All 14 included this complex were analysed for a total 39 populations. Metaphase plates obtained by squashing root tips stained with Feulgen technique. Measurable metaphase available literature also re-analysed. Chromosome number ...

A patient is reported with mental retardation, facial and body asymmetry, and hyperpigmented areas limited to the right side of the body. Cytogenetic studies revealed trisomy 18 in 50% of peripheral blood lymphocytes; fibroblast cultures from the hyperpigmented area showed pure trisomy 18, while the karyotype on the unaffected side was normal. This could be an example of the 'lines of Blaschko'...

A rare chromosome abnormality consisting of interstitial deletion 3q was found in a malformed girl. Chromosome analysis using G and Q banding showed deletion of bands 3q12----3q21: 46,XX,del(3)(pter----q12::q21----qter). The clinical features of the proband included severe psychomotor retardation, craniofacial asymmetry, hypertelorism, epicanthus, high arched palate, progressive scoliosis, mult...

This paper aims to examine the nature of width, depth and configuration distribution along Kuya River and their temporal directionality of changes. It also pays attention to prepare some simplified indices regarding basin asymmetry, channel asymmetry and river bank stability and to explain the nature of basin and channel asymmetry and river bank stability using those constructed indices. Irregu...

OBJECTIVE Better definition of normal amplitude asymmetry values on the classical EEG frequency bands. RESULTS EEG amplitude asymmetry index (AAI) is physiologically low in normal adults, differences usually lesser than 7%. CONCLUSION Persistent or intermittent amplitude asymmetry regional differences higher than 7% may be suggestive of pathology after adequate correlation with clinical dat...