Results 31 to 40 of about 2,725,833 (311)

Investigation of marmoset hybrids (Cebuella pygmaea x Callithrix jacchus) and related Callitrichinae (Platyrrhini) by cross-species chromosome painting and comparative genomic hybridization [PDF]

open access: yes, 2005
We report on the cytogenetics of twin offspring from an interspecies cross in marmosets (Callitrichinae, Platyrrhini), resulting from a pairing between a female Common marmoset (Callithrix jacchus, 2n = 46) and a male Pygmy marmoset (Cebuella pygmaea, 2n
Canavez FC   +15 more
core   +1 more source

Competition of Parental Genomes in Plant Hybrids

open access: yesFrontiers in Plant Science, 2020
Interspecific hybridization represents one of the main mechanisms of plant speciation. Merging of two genomes from different subspecies, species, or even genera is frequently accompanied by whole-genome duplication (WGD).
Marek Glombik   +4 more
doaj   +1 more source

Cytological and molecular characterization of wheat lines with Thinopyrum intermedium chromosome additions, substitutions and translocations resistant to barley yellow dwarf virus [PDF]

open access: yes, 1999
Barley yellow dwarf virus (BYDV) is the most serious viral disease affecting wheat and genes for BYDV resistance have not been found in wheat. BYDV-resistant alien addition and alien substitution lines produced from a wheat × Thinopyrum intermedium ...
Crasta, O.   +3 more
core   +1 more source

Wheat-barley hybridization – the last forty years [PDF]

open access: yes, 2013
Several useful alien gene transfers have been reported from related species into wheat (Triticum aestivum), but very few publications have dealt with the development of wheat/barley (Hordeum vulgare) introgression lines. An overview is given here of
A Blanco   +125 more
core   +1 more source

Chromosome-associated RNA–protein complexes promote pairing of homologous chromosomes during meiosis in Schizosaccharomyces pombe

open access: yesNature Communications, 2019
Pairing of homologous chromosomes in meiosis is essential for sexual reproduction. We have previously demonstrated that the fission yeast sme2 RNA, a meiosis-specific long noncoding RNA (lncRNA), accumulates at the sme2 chromosomal loci and mediates ...
Da‐Qiao Ding   +8 more
semanticscholar   +1 more source

Mechanics and dynamics of X-chromosome pairing at X inactivation. [PDF]

open access: yesPLoS Computational Biology, 2008
At the onset of X-chromosome inactivation, the vital process whereby female mammalian cells equalize X products with respect to males, the X chromosomes are colocalized along their Xic (X-inactivation center) regions.
Antonio Scialdone, Mario Nicodemi
doaj   +1 more source

Pushing the (nuclear) envelope into meiosis. [PDF]

open access: yes, 2013
A recent study shows that a short isoform of a mammalian nuclear lamin is important for homologous chromosome interactions during meiotic prophase in ...
Dernburg, Abby F
core   +1 more source

Homolog pairing during meiosis : dyneins on the move [PDF]

open access: yes, 2010
Meiosis is a specialized form of cell division that generates haploid gametes from diploid cells. This is achieved by having 1 round of DNA replication followed by 2 rounds of nuclear division.
Arumugam, Prakash
core   +1 more source

Chromosomally-retained RNA mediates homologous pairing [PDF]

open access: yesNucleus, 2012
Pairing and recombination of homologous chromosomes are essential for ensuring correct segregation of chromosomes in meiosis. In S. pombe, chromosomes are first bundled at the telomeres (forming a telomere bouquet) and then aligned by oscillatory movement of the elongated "horsetail" nucleus.
Ding, Da-Qiao   +2 more
openaire   +2 more sources

MNM and SNM maintain but do not establish achiasmate homolog conjunction during Drosophila male meiosis.

open access: yesPLoS Genetics, 2019
The first meiotic division reduces genome ploidy. This requires pairing of homologous chromosomes into bivalents that can be bi-oriented within the spindle during prometaphase I.
Michael Shoujie Sun   +4 more
doaj   +1 more source

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