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Genetic Background, Maternal Age, and Interaction Effects Mediate Rates of Crossing Over in Drosophila melanogaster Females

open access: yesG3: Genes, Genomes, Genetics, 2016
Meiotic recombination is a genetic process that is critical for proper chromosome segregation in many organisms. Despite being fundamental for organismal fitness, rates of crossing over vary greatly between taxa.
Chad M. Hunter   +3 more
doaj   +4 more sources

Contribution of crossing over to genetic variance in maize and wheat populations [PDF]

open access: yesThe Plant Genome
Crossing over breaks linkages and leads to a wider array of allele combinations. My objective was to assess the contribution of crossing over to genetic variance (VG) in maize (Zea mays L.) and wheat (Triticum aestivum L.).
Rex Bernardo
doaj   +3 more sources

Selection strategies for the development of maize introgression populations. [PDF]

open access: yesPLoS ONE, 2014
Introgression libraries are valuable resources for QTL detection and breeding, but their development is costly and time-consuming. Selection strategies for the development of introgression populations with a limited number of individuals and high ...
Eva Herzog   +5 more
doaj   +5 more sources

A cytological demonstration of "genetic" crossing-over [PDF]

open access: yesProceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character, 1930
A stage in meiosis where the paired chromosomes form loops, coming together at points distributed at random along their length, was first described by Rückert (1892) inPristiurus. These points we now recognise in suitable material as exchanges of partner amongst the four pairing half-chromosomes.
C. D. Darlington
openaire   +2 more sources

Crossing Over Genetic Algorithms: The Sugal Generalised GA

open access: yesJournal of Heuristics, 1998
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
A. Hunter
openaire   +3 more sources

DNA double-strand break repair: genetic determinants of flanking crossing-over. [PDF]

open access: yesProceedings of the National Academy of Sciences, 1994
Whether or not homologous interaction of two DNA molecules results in crossing-over of the flanking sequences is an important decision in view of genome organization. Several homologous recombination models, including the double-strand break repair models, explain this decision as choice between two alternative modes of resolution of Holliday-type ...
K, Kusano   +4 more
openaire   +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   +2 more sources

Genetic Mapping in Escherichia coli K-12 by Radiation-Induced Crossing-Over [PDF]

open access: yesJournal of Bacteriology, 1970
Conventional methods for chromosomal mapping in Escherichia coli are (i) interruption of matings to obtain minimum marker entry times, (ii) linkage analysis of recombinants, and (iii) cotransduction. Method (i) has a resolution of about 0.5 min (5 × 10 4 nucleotides) and is not useful for ...
M, Wann, S K, Mahajan, T H, Wood
openaire   +3 more sources

A high-resolution crossover landscape in Drosophila santomea reveals rapid and concerted evolution of multiple properties of crossing over control. [PDF]

open access: yesPLoS Genetics
Crossing over is a fundamental process in sexually reproducing species, ensuring proper chromosome segregation during gamete formation and generating new allelic combinations that enhance adaptation. Despite its essential role, genes involved in crossing
Ana Llopart   +3 more
doaj   +2 more sources

Male crossing over and genetic sexing systems in the Australian sheep blowfly Lucilia cuprina [PDF]

open access: yesHeredity, 1991
Field-female killing (FK) systems based on deleterious mutations and Y-autosome translocations are being evaluated for genetic control of the Australian sheep blowfly, Lucilia cuprina. Experience during field trials has shown that mass-reared colonies of FK strains are subject to genetic deterioration, caused mainly by genetic recombination in males. A
G G, Foster, G L, Weller, G M, Clarke
openaire   +3 more sources

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