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If single cross over frequency between two genes r and q and q and s in 3 point mapping is 0.6 and 0.2 respectively. What will be the expected double cross over frequency?(a) 0.012(b) 0.010(c) 0.022(d) 0.024I got this question during an online exam.I would like to ask this question from Linkage and Crossing Over in chapter Genetic Recombination of Cytogenetics

Answer»

Right CHOICE is (C) 0.022

Explanation: Expected double cross over FREQUENCY by probability rule is product of the two single CROSSOVER frequencies in three point MAPPING. Here 20.8X10.0/10000 results on 0.022.



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