In Drosophila, a cross was made between females all expressing the three X-linked recessive traits scute bristles (sc), sable bo

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In Drosophila, a cross was made between females all expressing the three X-linked recessive traits scute bristles (sc), sable body (s), and vermilion eyes (v) and wild-type males. In the F1, all females were wild type, while all males expressed all three mutant traits. The cross was carried out to the F2 generation and 1000 offspring were counted, with the results in the table. No determination of sex was made for the F2 generation.

A) Determine genotypes of the P1 and F1 parents.
B) Determine the sequence of the genes and the map distance between them
C) Are there more or fewer double crossovers than expected?
D)Calculate the coefficent of coincidence; does this represent postive or negative inferference? 



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