Results 61 to 70 of about 499,830 (212)

Chromosomal aberrations in transitional cell carcinoma that are predictive of disease outcome are independent of polyploidy [PDF]

open access: yes, 1999
Objective To determine whether aneusomy for chromosomes 7, 9 and 17 (reported to predict recurrence in up to 65% of patients with superficial transitional cell bladder cancer and thus providing the opportunity for early and effective treatment) reflects ...
Watters, A.D.   +4 more
core   +1 more source

Chromosome Structure: Coiling up chromosomes [PDF]

open access: yesCurrent Biology, 1995
The mechanism by which eukaryotic chromosomes condense as cells enter mitosis has long been inaccessible to molecular biologists. An important clue has now been provided by a ubiquitous protein family, the SMCs.
openaire   +2 more sources

Disease-associated patterns of disomic chromosomes in hyperhaploid neoplasms.

open access: yes, 2012
The chromosome number of human tumors varies widely, from near-haploidy to more than decaploidy. Overt hyperhaploid (24-34 chromosomes) tumors constitute a small minority (0.2-0.3% of cytogenetically investigated lesions), but occur in many different ...
Johansson, Bertil   +8 more
core   +1 more source

Early events in the evolution of the Silene latifolia Y chromosome: Male specialization and recombination arrest [PDF]

open access: yes, 2007
Understanding the origin and evolution of sex chromosomes requires studying recently evolved X-Y chromosome systems such as those in some flowering plants.
Georgiev, Sevdalin   +8 more
core   +1 more source

Chromosomics: Bridging the Gap between Genomes and Chromosomes [PDF]

open access: yesGenes, 2019
The recent advances in DNA sequencing technology are enabling a rapid increase in the number of genomes being sequenced. However, many fundamental questions in genome biology remain unanswered, because sequence data alone is unable to provide insight into how the genome is organised into chromosomes, the position and interaction of those chromosomes in
Janine E. Deakin   +15 more
openaire   +4 more sources

Molecular cytotaxonomy of primates by chromosomal in situ suppression hybridization [PDF]

open access: yes, 1990
A new strategy for analyzing chromosomal evolution in primates is presented using chromosomal in situ suppression (CISS) hybridization. Biotin-labeled DNA libraries from flow-sorted human chromosomes are hybridized to chromosome preparations of ...
Stanyon, Roscoe   +3 more
core   +1 more source

Chromosome Evolution: The Junction of Mammalian Chromosomes in the Formation of Mouse Chromosome 10 [PDF]

open access: yesGenome Research, 2000
During evolution, chromosomes are rearranged and become fixed into new patterns in new species. The relatively conservative nature of this process supports predictions of the arrangement of ancestral mammalian chromosomes, but the basis for these rearrangements is unknown.
M T, Pletcher   +6 more
openaire   +2 more sources

Ultrastructural analysis of chromatin in meiosis I plus II of rye (Secale cereale L.) [PDF]

open access: yes, 2004
Scanning electron microscopy (SEM) proves to be an appropriate technique for imaging chromatin organization in meiosis I and II of rye (Secale cereale) down to a resolution of a few nanometers.
Herrmann, Reinhold G.   +3 more
core   +1 more source

Cytogenetic analysis of five Hypostomus species (Siluriformes, Loricariidae)

open access: yesGenetics and Molecular Biology, 2011
In this work, we analyzed the karyotypes of five species. Hypostomus cf. heraldoi, from the Mogi-Guaçu River, had 2n = 72 chromosomes, with a nucleolar organizer region (NOR) in one chromosomal pair.
Emanuel Ricardo Monteiro Martinez   +3 more
doaj  

Five new species of Pristimantis (Anura: Strabomantidae) from the coastal cloud forest of the Península de Paria, Venezuela

open access: yesJournal of Threatened Taxa, 2015
Fieldwork in the cloud forest of Venezuela’s remote Península de Paria in 2001 resulted in the collection of several specimens that could unquestionably be classified as members of the genus Pristimantis.
Hinrich Kaiser   +4 more
doaj   +1 more source

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