the fruit fly, Drosophila melanogaster, a spineless (sp, no wing bristles) female fly is mated to a male that is claret (cl, dark eyes) and hairless (h, no thoracic bristles).  Phenotypically wild type F1 female progeny were mated to fully homozygous (mutant) males and the following progeny (1000 total) were observed.                                        PHENOTYPES                    NUMBER OBSERVED             spineless                                             266             wild                                                      181             claret, spineless                                    18             claret                                                     37             claret, hairless                                     264             hairless, claret, spineless                    189             hairless                                                  12             hairless, spineless                                 33                                                                                                                               What is the correct gene map for these genes? (A-E)                                                                                                                               What is the interference value? (F-J) A. cl-------40------h------10-------sp B. sp-------10------cl------40-------h C. cl-------40------sp------10-------h D. sp------40------cl-------10-------h E. cl-------10-------h------40-------sp F. 0.75 G. 0.5

Human Anatomy & Physiology (11th Edition)
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Author:Elaine N. Marieb, Katja N. Hoehn
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n the fruit fly, Drosophila melanogaster, a spineless (sp, no wing bristles) female fly is mated to a male that is claret (cl, dark eyes) and hairless (h, no thoracic bristles).  Phenotypically wild type F1 female progeny were mated to fully homozygous (mutant) males and the following progeny (1000 total) were observed.                           

            PHENOTYPES                    NUMBER OBSERVED

            spineless                                             266

            wild                                                      181

            claret, spineless                                    18

            claret                                                     37

            claret, hairless                                     264

            hairless, claret, spineless                    189

            hairless                                                  12

            hairless, spineless                                 33

                                                                                                                             

What is the correct gene map for these genes? (A-E)

                                                                                                                             

What is the interference value? (F-J)

A.

cl-------40------h------10-------sp

B.

sp-------10------cl------40-------h

C.

cl-------40------sp------10-------h

D.

sp------40------cl-------10-------h

E.

cl-------10-------h------40-------sp

F.

0.75

G.

0.5

H.

0.33

I.

0.25

J.

0.125

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