Results 1 to 10 of about 11,135,105 (392)

Chromosome number evolution in skippers (Lepidoptera, Hesperiidae) [PDF]

open access: yesComparative Cytogenetics, 2014
Lepidoptera (butterflies and moths), as many other groups of animals and plants, simultaneously represent preservation of ancestral karyotype in the majority of families with a high degree of chromosome number instability in numerous independently ...
Vladimir Lukhtanov
doaj   +3 more sources

Chromosome number evolves at equal rates in holocentric and monocentric clades. [PDF]

open access: yesPLoS Genet, 2020
Despite the fundamental role of centromeres two different types are observed across plants and animals. Monocentric chromosomes possess a single region that function as the centromere while in holocentric chromosomes centromere activity is spread across ...
Ruckman SN   +3 more
europepmc   +2 more sources

THE CHROMOSOME NUMBER OF MAIZE [PDF]

open access: bronzeGenetics, 1925
The wide-spread interest in the genetics of maize, coupled with the uncertainty as to the number of chromosomes occurring in this species prompted the investigation which is here reported. From a review of the literature it appears that Kuwada (1911, 1915, 1919) is the only worker who has reported extensive counts of maize chromosomes.
T. A. Kiesselbach, N. Petersen
openalex   +4 more sources

Chromosome number, sex determination, and meiotic chromosome behavior in the praying mantid Hierodula membranacea. [PDF]

open access: yesPLoS ONE, 2022
Praying mantids are important models for studying a wide range of chromosome behaviors, yet few species of mantids have been characterized chromosomally.
Leocadia V Paliulis   +7 more
doaj   +2 more sources

Role of the Number of Microtubules in Chromosome Segregation during Cell Division [PDF]

open access: yesPLoS ONE 10(10): e0141305 (2015), 2015
Faithful segregation of genetic material during cell division requires alignment of chromosomes between two spindle poles and attachment of their kinetochores to each of the poles. Failure of these complex dynamical processes leads to chromosomal instability (CIN), a characteristic feature of several diseases including cancer.
Z. Bertalan   +3 more
arxiv   +3 more sources

Molecular Phylogeny of Trifolium L. Section Trifolium with Reference to Chromosome Number and Subsections Delimitation [PDF]

open access: yesPlants, 2021
The genus Trifolium is one of the largest genera of the legume family Fabaceae with ca. 255 species. The genus is divided into eight sections; the section Trifolium is a major section of the genus, comprising 73 species mainly distributed in the ...
Hanan I. Sayed Ahmed   +5 more
doaj   +2 more sources

Variation in genome size, cell and nucleus volume, chromosome number and rDNA loci among duckweeds. [PDF]

open access: yesSci Rep, 2019
Duckweeds are small, free-floating, largely asexual and highly neotenous organisms. They display the most rapid growth among flowering plants and are of growing interest in aquaculture and genome biology.
Hoang PTN   +4 more
europepmc   +2 more sources

Unscrambling phylogenetic effects and ecological determinants of chromosome number in major angiosperm clades. [PDF]

open access: yesSci Rep, 2018
As variations in the chromosome number are recognized to be of evolutionary interest but are also widely debated in the literature, we aimed to quantitatively test for possible relationships among the chromosome number, plant traits, and environmental ...
Carta A, Bedini G, Peruzzi L.
europepmc   +2 more sources

Natural selection reduced diversity on human Y chromosomes [PDF]

open access: yesarXiv, 2013
The human Y chromosome exhibits surprisingly low levels of genetic diversity. This could result from neutral processes if the effective population size of males is reduced relative to females due to a higher variance in the number of offspring from males than from females.
Lohmueller, Kirk E.   +2 more
arxiv   +7 more sources

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