Results 11 to 20 of about 9,924,069 (183)

Cytological Analysis of Crossover Frequency and Distribution in Male Meiosis of Cardueline Finches (Fringillidae, Aves)

open access: yesAnimals, 2023
Meiotic recombination is an important source of genetic diversity. Using immunolocalization of several meiotic proteins at the spreads of male pachytene cells, we estimated the number of recombination nodules per cell and their distribution along the ...
Ekaterina Grishko   +5 more
doaj   +1 more source

Crossing Over to Cross-Over Trials [PDF]

open access: yesSignificance, 2009
Abstract If you have never designed a cross-over trial before then Byron Jones and Scott Haughie give some helpful tips on how to do it.
Byron Jones, Scott Haughie
openaire   +1 more source

Effect of Female Age on Crossing Over Frequency in Drosophila melanogaster Crosses N x bcl and N x ym and Their Reciprocals

open access: yesBiology, Medicine & Natural Product Chemistry, 2023
Crossing over is the occurrence of disconnection and reconnection followed by a reciprocal exchange between the two chromatids in a bivalent form. The crossing event will produce parental type and recombinant type.
Lisa Savitri   +5 more
doaj   +1 more source

Preferential Disomic Segregation and C. micrantha/C. medica Interspecific Recombination in Tetraploid ‘Giant Key’ Lime; Outlook for Triploid Lime Breeding

open access: yesFrontiers in Plant Science, 2020
The triploid ‘Tahiti’ lime (C. x latifolia (Yu. Tanaka) Tanaka) naturally originated from a merger between a haploid ovule of lemon (C. x limon (L.) Burm) and a diploid pollen from a ‘Mexican’ lime (C. x aurantiifolia (Christm.) Swing).
Dalel Ahmed   +4 more
doaj   +1 more source

Control of Crossing Over [PDF]

open access: yesMolecular Cell, 2000
The Holliday junction is a central intermediate in homologous recombination. It consists of a four-way structure that can be resolved by cleavage to give either the crossover or noncrossover products observed. We show here that the formation of these products is controlled by the E. coli resolvasome (RuvABC) in such way that double-strand break repair (
Cromie, Gareth A., Leach, David R.F.
openaire   +2 more sources

Influence of virtual reality training on the roadside crossing judgements of child pedestrians [PDF]

open access: yes, 2005
The roadside crossing judgments of children aged 7, 9, and 11 years were assessed relative to controls before and after training with a computer-simulated traffic environment.
Morrison, S.   +5 more
core   +4 more sources

The unsung hero of science: Barbara McClintock, who won the Nobel Prize in Physiology or Medicine in 1983 for her discovery of mobile genetic elements [PDF]

open access: yesThe Ukrainian Biochemical Journal
In 1983, American plant biologist and cytogeneticist McClintock, one of the great loners of modern­ scien­ce, received the first woman scientist’s unshared Nobel Prize in Physiology or Medicine. Barbara McClintock’s research, conducted in the 1930s, long
O. P. Matyshevska   +2 more
doaj   +1 more source

Levels of Heterochiasmy During Arabidopsis Development as Reported by Fluorescent Tagged Lines

open access: yesG3: Genes, Genomes, Genetics, 2020
Crossing over, the exchange of DNA between the chromosomes during meiosis, contributes significantly to genetic variation. The rate of crossovers (CO) varies depending upon the taxon, population, age, external conditions, and also, sometimes, between the
Ramswaroop Saini   +3 more
doaj   +1 more source

Crossover interference mechanism: New lessons from plants

open access: yesFrontiers in Cell and Developmental Biology, 2023
Plants are the source of our understanding of several fundamental biological principles. It is well known that Gregor Mendel discovered the laws of Genetics in peas and that maize was used for the discovery of transposons by Barbara McClintock.
Nahid Rafiei, Arnaud Ronceret
doaj   +1 more source

The Toroidal Crossing Number [PDF]

open access: yes, 2011
Studying the crossing number of the complete bipartite graph K4,n in ...
Ling, Tang   +2 more
core   +1 more source

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