Results 21 to 30 of about 11,267,652 (394)

Mechanisms of chromosome number evolution in yeast. [PDF]

open access: yesPLoS Genetics, 2011
The whole-genome duplication (WGD) that occurred during yeast evolution changed the basal number of chromosomes from 8 to 16. However, the number of chromosomes in post-WGD species now ranges between 10 and 16, and the number in non-WGD species ...
Jonathan L Gordon   +2 more
doaj   +1 more source

Evolutionary mechanisms of runaway chromosome number change in Agrodiaetus butterflies. [PDF]

open access: yesSci Rep, 2017
Despite predictions of the classic, hybrid-sterility model of chromosomal speciation, some organisms demonstrate high rate of karyotype evolution. This rate is especially impressive in Agrodiaetus butterflies that rapidly evolved the greatest chromosome ...
Vershinina AO, Lukhtanov VA.
europepmc   +2 more sources

The Chromosome counts of some species of wetland plants from Northwest Iran

open access: yesCaryologia, 2023
Wetlands scatter as microclimates in mountain areas of Iran. In this investigation, the chromosome number of species and populations from Azerbaijan provinces were studied.
Saeedeh Sadat Mirzadeh Vaghefi   +1 more
doaj   +1 more source

chromploid: An R package for chromosome number evolution across the plant tree of life. [PDF]

open access: yesAppl Plant Sci, 2018
Premise of the Study Polyploidy has profound evolutionary consequences for land plants. Despite the availability of large phylogenetic and chromosomal data sets, estimating the rates of polyploidy and chromosomal evolution across the tree of life remains
Zenil-Ferguson R   +2 more
europepmc   +2 more sources

CHROMOSOME NUMBER REPORTS XCVI [PDF]

open access: yesTAXON, 1986
Angiospermes de: Iran, Etats-Unis, Canada, Iles Canaries, Mexique, Nigeria, France, Grece et Autriche etc.
openaire   +1 more source

CENH3-GFP: a visual marker for gametophytic and somatic ploidy determination in Arabidopsis thaliana [PDF]

open access: yes, 2016
Background: The in vivo determination of the cell-specific chromosome number provides a valuable tool in several aspects of plant research. However, current techniques to determine the endosystemic ploidy level do not allow non-destructive, cell-specific
Angenon, Geert   +4 more
core   +5 more sources

Cytogenetic Studies in Turkey: Fishes (Vertebrata, Pisces)

open access: yesTurkish Journal of Bioscience and Collections, 2021
In Turkey surrounded by sea on three sides and hundreds of freshwater resources, it was reported that there is a total of 903 species of fish including freshwater and marine species. In the last thirty-five years in Turkish fish cytogenetics, 103 species/
Serkan Saygun
doaj   +1 more source

A surge of late-occurring meiotic double-strand breaks rescues synapsis abnormalities in spermatocytes of mice with hypomorphic expression of SPO11 [PDF]

open access: yes, 2015
Meiosis is the biological process that, after a cycle of DNA replication, halves the cellular chromosome complement, leading to the formation of haploid gametes.
Barchi, Marco   +9 more
core   +3 more sources

Chromosome numbers of Trifolium species from Romania

open access: yesNotulae Botanicae Horti Agrobotanici Cluj-Napoca, 1987
Trifolium accessions belonging to 13 clover species have been collected during a joint germplasm collecting mission organized in cooperation between USDA (USA) and ASAS (Romania) and samples were analysed for chromosome numbers.
N. L. TAYLOR
doaj   +1 more source

Multicolour interphase cytogenetics: 24 chromosome probes, 6 colours, 4 layers [PDF]

open access: yes, 2011
From the late 1980s onwards, the use of DNA probes to visualise sequences on individual chromosomes (fluorescent in-situ hybridisation - FISH) revolutionised the study of cytogenetics.
A.R. Thornhill   +61 more
core   +1 more source

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