Results 31 to 40 of about 590,304 (313)

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.
H B, Creighton, B, McClintock
openaire   +2 more sources

INDUCED MITOTIC CROSSING-OVER IN RELATION TO GENETIC REPLICATION IN SYNCHRONOUSLY DIVIDING CELLS OF USTILAGO MAYDIS.

open access: yesGenetical research, 1965
A method is now available for synchronizing the division of populations of cells of the smut fungus Ustilago maydis . In two experiments carried out with a diploid strain heterozygous for several biochemical markers, samples of cells were removed at ...
R. Holliday
semanticscholar   +1 more source

Effect of Cross Over Operator in Genetic Algorithms on Anticipatory Scheduling [PDF]

open access: yesProceedings of the International Symposium on Automation and Robotics in Construction (IAARC), 2007
Disk schedulers in current operating systems schedule a request as soon as the previous request has been completed. In many common applications disk read requests are issued synchronously with short period between them In this case, the scheduler switches to a request from another process with the assumption that the last process has no more requests ...
R. Muthu Selvi, R. Rajaram
openaire   +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

Variable grouping in multivariate time series via correlation [PDF]

open access: yes, 2001
The decomposition of high-dimensional multivariate time series (MTS) into a number of low-dimensional MTS is a useful but challenging task because the number of possible dependencies between variables is likely to be huge.
Liu, X, Swift, S, Tucker, A
core   +1 more source

Redundancy and compensation in axon guidance: genetic analysis of the Drosophila Ptp10D/Ptp4E receptor tyrosine phosphatase subfamily [PDF]

open access: yes, 2008
Background: Drosophila has six receptor protein tyrosine phosphatases (RPTPs), five of which are expressed primarily in neurons. Mutations in all five affect axon guidance, either alone or in combination.
Bahri, Sami   +3 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

Genetic Gain Trend in Yield and Advanced Selection of Yayo Coffee (Coffea arabica L.) Land Race Collection

open access: yesAdvances in Agriculture, 2022
Coffea arabica L., the dominant cash crop in the world market, is native to rain forest of Ethiopia where it is believed to exist with high genetic diversity. Estimating genetic parameters are momentous in deciding breeding method to be followed for crop
Dawit Merga   +9 more
doaj   +1 more source

Genetic Programming Crossover: Does It Cross over? [PDF]

open access: yes, 2009
One justification for the use of crossover operators in Genetic Programming is that the crossover of program syntax gives rise to the crossover of information at the semantic level. In particular, a fitness-increasing crossover is presumed to act by combining fitness-contributing components of both parents.
openaire   +1 more source

Homoeologous Chromosomes From Two Hordeum Species Can Recognize and Associate During Meiosis in Wheat in the Presence of the Ph1 Locus

open access: yesFrontiers in Plant Science, 2018
Understanding the system of a basic eukaryotic cellular mechanism like meiosis is of fundamental importance in plant biology. Moreover, it is also of great strategic interest in plant breeding since unzipping the mechanism of chromosome specificity ...
María C. Calderón   +3 more
doaj   +1 more source

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