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15 November, 23:16

Genes A and B are located 10cM from each other on a chromosome. Gene C is located 25cM from gene A and 15cM from gene B. What is the probability that the trihybrid ABC/abc will produce any kind of recombinant gamete

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  1. 16 November, 02:05
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    0.235

    Explanation:

    Given

    Distance between A and B = 0.10

    Distance between B and C = 0.15

    Distance between A and C = 0.25

    The probability of double crossovers (DCO) are determined by the product of two single crossovers;

    Therefore, the probability of a DCO = 0.10 * 0.15

    = 0.015

    = 1.5%

    As the failure to detect a recombination is in DCO, the loci at 25cM will only show recombination at a frequency of:

    25 - 1.5

    = 23.5%

    Hence, the probability that the trihybrid ABC/abc will produce any kind of recombinant gamete = 23.5% = 0.235
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