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A genetic map based on the frequencies of recombination between markers during crossing over of homologous chromosomes. Linkage maps will then show the relative distances of the genes on that chromosome.
Suppose that the distance between two genes on a linkage map is 7 units. The cross-over frequency between the two genes is
Study with Quizlet and memorize flashcards containing terms like Distance of genes on chromosome is based on, The closer the genes are together, the _____ crossovers, three point test crosses and more.
Select all of the following that are true regarding chromosome mapping. the maximum map units for any pair of genes is 50. map units are equivalent to the percentage of gametes produced who have undergone a crossover between the genes being mapped.
By finding recombination frequencies for many gene pairs, we can make linkage maps that show the order and relative distances of the genes on the chromosome.
Calculate the map distance between loci given the phenotypes of offspring or predict phenotypes of offspring given the recombination frequency between loci. Use the distance to construct genetic maps based on data from two-point or three-point testcrosses.
It is possible to determine the approximate distance between genetic markers using cytogenetic mapping, but not the exact distance (number of base pairs). Radiation hybrid mapping uses radiation, such as x-rays, to break the DNA into fragments.
