Results 11 to 20 of about 286,607 (305)

GENETIC FACTORS INFLUENCING CROSSING-OVER FREQUENCY IN NEUROSPORA [PDF]

open access: yesGenetics, 1962
DIFFERENT crosses involving the same marked region in Neurospora crassa may yield markedly different frequencies of recombinants. It has been suggested that the fluctuations in recombination frequency result from inherent differences between the various wild-type strains from which the stocks descended (BARRATT 1954; FROST 1961). However, the nature of
David R. Stadler, Agnes M. Towe
openaire   +3 more sources

Meiotic recombination in Arabidopsis is catalysed by DMC1, with RAD51 playing a supporting role. [PDF]

open access: yesPLoS Genetics, 2013
Recombination establishes the chiasmata that physically link pairs of homologous chromosomes in meiosis, ensuring their balanced segregation at the first meiotic division and generating genetic variation.
Olivier Da Ines   +5 more
doaj   +1 more source

Genetic variability in soybean with resistance to cyst nematode and powdery mildew: impact of multi-parent crosses on recombination and genetic diversity [PDF]

open access: yesBrazilian Journal of Biology
The objective of this study was to analyze the genetic variability generated from two-way, four-way, and eight-way hybridizations in soybean, derived from parental lines contrasting in resistance to cyst nematode and powdery mildew.
F. R. S. Muniz   +6 more
doaj   +1 more source

Assessment of the Degree of Relatedness of Some Inbred Lines Created at ARDS Turda

open access: yesAgronomy, 2023
Knowledge of relatedness among maize elite breeding genotypes is useful in planning crosses for hybrid and inbred line improvement and assigning them into heterotic groups.
Andrei Varga   +5 more
doaj   +1 more source

A possible influence of the spindle fibre on crossing-over in Drosophila [PDF]

open access: yes, 1932
The distribution of genes in the second and third chromosomes of Drosophila melanogaster suggests that crossing-over may be influenced by the spindle fibre at least in neighboring regions.
Beadle, G. W.
core   +2 more sources

A Correlation of Cytological and Genetical Crossing-Over in Zea Mays [PDF]

open access: yesProceedings of the National Academy of Sciences, 1931
In this paper, McClintock and Creighton conclusively demonstrated the occurrence of genetic and cytological crossingover, a process assumed but not proven since 1910. In it they took two genetic markers and two cytological markers and demonstrated that when crossing-over occurred, they traveled together.
Harriet B. Creighton, Barbara McClintock
openaire   +3 more sources

Natural genetic transformation generates a population of merodiploids in Streptococcus pneumoniae. [PDF]

open access: yesPLoS Genetics, 2013
Partial duplication of genetic material is prevalent in eukaryotes and provides potential for evolution of new traits. Prokaryotes, which are generally haploid in nature, can evolve new genes by partial chromosome duplication, known as merodiploidy ...
Calum Johnston   +9 more
doaj   +1 more source

Control of meiotic crossing over in plant breeding

open access: yesВавиловский журнал генетики и селекции, 2023
Meiotic crossing over is the main mechanism for constructing a new allelic composition of individual chromosomes and is necessary for the proper distribution of homologous chromosomes between gametes.
S. R. Strelnikova, R. A. Komakhin
doaj   +1 more source

Variability of cell wall polysaccharides composition and hemicellulose enzymatic profile in an apple progeny [PDF]

open access: yes, 2011
The genetic variability of apple cell walls polysaccharides chemical composition and structure was assessed in a progeny of 141 individuals harvested over 2 years.
B. Quéméner   +3 more
core   +3 more sources

Positive Selection and Functional Divergence at Meiosis Genes That Mediate Crossing Over Across the Drosophila Phylogeny

open access: yesG3: Genes, Genomes, Genetics, 2019
Meiotic crossing over ensures proper segregation of homologous chromosomes and generates genotypic diversity. Despite these functions, little is known about the genetic factors and population genetic forces involved in the evolution of recombination rate
Cara L. Brand   +2 more
doaj   +1 more source

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