This study uses Cartesian plane geometry to model mitotic cells and describe mathematical methods based on this quantify chromosome misalignment measure kinetochore position metaphase plates. The method is adapted count lagging kinetochores in anaphase provide semiautomated, user-friendly ImageJ macros facilitate the operations.

Chromosome count is the only direct way to determine number of chromosomes a species. This study often considered trivial that seldom described and discussed in detail. Therefore, it inevitable chromosome protocol should be revised revisited before becomes obliterated. In present study, we encountered challenges obtaining clear micrograph for active mitotic cells Neolamarckia cadamba (Roxb.) Bo...

background: wide range of disorders ranging from genetic disorders to coital difficulties can influence male fertility. in this regard, genetic factors are highlighted as the most frequent, contributed to 10-15%, of male infertility causes. objective: to investigate the influence of genetic abnormalities on semen quality and reproductive hormone levels of infertile men from northeast china. mat...

Cousinia papillosa (Asteraceae) from eastern Iran is described and illustrated as a new species. Differences between the new species and its closest relative, C. meshhedensis, are discussed. A map showing the distribution of the two species is given. The scanning electron micrography of the pollen grains shows obvious differences between the two species especially in the sculpturing of exine. T...

In order to determine significance of word counts of DNA sequences, it is of first importance to develop a baseline comparison so that the non-randomness of the observed word count can be measured. We developed a novel measure of oligomer expected count using the concept of set partitions. This expected count provides a baseline reference to reveal non-random DNA sequences. Non-randomness of ol...

Background Monosomy is defined as the presence of only one chromosome instead of two in humans. Partial monosomy occurs when only a portion of the chromosome is present in a single copy, while the rest has two copies. It can occur in unbalanced translocations or deletions. Case report In this report, a 6 years old girl was presented who was referred to the Pediatric Dep, Shahid Sadoughi Ho...

background: the sperm count and function may be affected by karyotype abnormalities or microdeletion in y chromosome. these genetic abnormalities can probably transmit to the children. objective: in this study, we tried to determine the frequency of karyotype abnormalities and y chromosome microdeletions in severe oligospermic or azoospermic men who fathered sons by icsi. materials and methods:...

The present study investigates the cytological and morphological analysis, and intraspecific polyploidy in V. anagallis-aquatica L. which sampled from Kinnaur district of Himachal Pradesh in India revealed the existence of diploid (n=9) and tetraploid (n=18) cytotypes based on x=9. The tetraploid chromosome count (2n=36) in the species confirms the earlier chromosome report from India and other...

After the first report of a ring chromosome in a case of human leukemia by Sandberg et al., ring chromosomes have been infrequently (!10%) detected in hematopoietic neoplasias [1,2]. In most cases, however, ring chromosomes were part of a more or less complex karyotype associated with a poor prognosis [2]. As far as we know, there was no detailed, confirmatory report on an association between a...