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Unformatted text preview: The number of recombinants in the a – b region, including doubles, will be 10%, or 100 progeny. Of these, 20 will be double crossovers, leaving 80 in the single crossover category a + b + d + a b d + . Of these 80, 40 will be a + b + d . 12. First, if there is no interference, the number of doublecrossover progeny can be predicted simply from the map distances given (10% and 20%). When converted to frequencies and multiplied, we have the expected number of double crossovers, 20 of 1000 progeny. Of these 20 double crossovers, 10 are RdY . If the coefficient of coincidence were 0.3, the total number of double crossovers will be 20 x 0.3 = 6 out of 1000, and of these 3 will have the RdY genotype. 2...
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This note was uploaded on 06/15/2009 for the course BIO 89165 taught by Professor Saxena during the Summer '09 term at University of Texas.
 Summer '09
 SAXENA
 Genetics

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