### In drosophila-sepia eyes-curled wings and ebony body

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In Drosophila, sepia eyes (se), curled wings (cu) and ebony body (e) are found, in this order, on chromosome 3. Sepia is 23 map units from curled, which is 11 map units from ebony. A true-breeding female with sepia eyes and ebony body is crossed to a true-breeding male who has curled wings. The resulting F1 progeny from this cross are all wild type. An F1 female is test crossed to a male expressing all three traits. Assuming a Coefficient of coincidence of 1:

a. What proportion of the F2 progeny will express only the ebony trait?

b. If there are 1000 total flies, what number will express curved only?

Please include explanation and points/fantastic rating will be given.

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