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  2. Genetic linkage - Wikipedia

    en.wikipedia.org/wiki/Genetic_linkage

    Recombination frequency is a measure of genetic linkage and is used in the creation of a genetic linkage map. Recombination frequency (θ) is the frequency with which a single chromosomal crossover will take place between two genes during meiosis. A centimorgan (cM) is a unit that describes a recombination frequency of 1%. In this way we can ...

  3. Genetic recombination - Wikipedia

    en.wikipedia.org/wiki/Genetic_recombination

    In genetic engineering, recombination can also refer to artificial and deliberate recombination of disparate pieces of DNA, often from different organisms, creating what is called recombinant DNA. A prime example of such a use of genetic recombination is gene targeting , which can be used to add, delete or otherwise change an organism's genes.

  4. Coefficient of coincidence - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_coincidence

    Knowing the recombination rate between A and B and the recombination rate between B and C, we would naively expect the double recombination rate to be the product of these two rates. The coefficient of coincidence is calculated by dividing the actual frequency of double recombinants by this expected frequency: [1]

  5. Genetic map function - Wikipedia

    en.wikipedia.org/wiki/Genetic_map_function

    Where d is the distance in map units, the Morgan Mapping Function states that the recombination frequency r can be expressed as =.This assumes that one crossover occurs, at most, in an interval between two loci, and that the probability of the occurrence of this crossover is proportional to the map length of the interval.

  6. Crossover (evolutionary algorithm) - Wikipedia

    en.wikipedia.org/wiki/Crossover_(evolutionary...

    Crossover in evolutionary algorithms and evolutionary computation, also called recombination, is a genetic operator used to combine the genetic information of two parents to generate new offspring. It is one way to stochastically generate new solutions from an existing population, and is analogous to the crossover that happens during sexual ...

  7. Chromosomal crossover - Wikipedia

    en.wikipedia.org/wiki/Chromosomal_crossover

    Irradiation during the leptotene-zygotene stages of meiosis (that is, prior to the pachytene period in which crossover recombination occurs) was found to increase subsequent chiasma frequency. Similarly, in the grasshopper Chorthippus brunneus , exposure to X-irradiation during the zygotene-early pachytene stages caused a significant increase ...

  8. Three-point cross - Wikipedia

    en.wikipedia.org/wiki/Three-point_cross

    If the recombination frequency is greater than 50 percent, it means that the genes are unlinked - they are either located on different chromosomes or are sufficiently distant from each other on the same chromosome. Any recombination frequency greater than 50 percent is expressed as exactly 50 percent because, being unlinked, they are equally as ...

  9. Complete linkage - Wikipedia

    en.wikipedia.org/wiki/Complete_linkage

    These probabilities of recombination can be used to construct a linkage map, or a graphical representation of the location of genes and gene in respect to one another. If linkage is complete, there should be no recombination events that separate the two alleles, and therefore only parental combinations of alleles should be observed in offspring.