Results 21 to 30 of about 199,391 (364)

How to pre-pair chromosomes for meiosis [PDF]

open access: yesCell Cycle, 2016
Meiosis is a special type of cell division specific to germ cells, whereby diploid germ cells produce haploid gametes for sexual reproduction.
Nicolas Christophorou   +5 more
openaire   +3 more sources

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

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

Inducing chromosome pairing through premature condensation: analysis of wheat interspecific hybrids [PDF]

open access: yes, 2010
At the onset of meiosis, chromosomes first decondense and then condense as the process of recognition and intimate pairing occurs between homologous chromosomes.
Draeger, Tracie   +6 more
core   +2 more sources

HAL-2 promotes homologous pairing during Caenorhabditis elegans meiosis by antagonizing inhibitory effects of synaptonemal complex precursors. [PDF]

open access: yesPLoS Genetics, 2012
During meiosis, chromosomes align with their homologous pairing partners and stabilize this alignment through assembly of the synaptonemal complex (SC). Since the SC assembles cooperatively yet is indifferent to homology, pairing and SC assembly must be ...
Weibin Zhang   +9 more
doaj   +1 more source

The KL system in wheat permits homoeologous crossing over between closely related chromosomes

open access: yesCrop Journal, 2023
The Chinese wheat landrace Kaixianluohanmai (KL) expresses the ph-like phenotype. A major QTL, QPh.sicau-3A (syn. phKL), responsible for this effect has been mapped to chromosome arm 3AL.
Chaolan Fan   +15 more
doaj  

Homologue Pairing in Flies and Mammals: Gene Regulation When Two Are Involved [PDF]

open access: yes, 2012
Chromosome pairing is usually discussed in the context of meiosis. Association of homologues in germ cells enables chromosome segregation and is necessary for fertility.
Apte, Manasi S., Meller, Victoria H.
core   +3 more sources

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

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

Identification of 5P Chromosomes in Wheat-Agropyron cristatum Addition Line and Analysis of Its Effect on Homologous Pairing of Wheat Chromosomes

open access: yesFrontiers in Plant Science, 2022
As an important wheat wild relative, the P genome of Agropyron cristatum (L.) Gaertn. (2n = 4x = 28) is very valuable for wheat improvement. A complete set of wheat-A.
Cuili Pan   +10 more
doaj   +1 more source

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