Question 6 Drosophila normally has white eyes and short wings, but the mutant has red eyes and large wings. O True False • Previous
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This means that the normal phenotype of Drosophila is white eyes and short wings. Show more…
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In the fruit fly, Drosophila, the hairy body phenotype (h) is recessive to smooth body (h+) and the gene for this trait is autosomal. Carnation eye color (c) and rudimentary wings (r) are recessive mutations in genes located on the X chromosome. The map distance between c and r is 8 cM. The following cross is performed and 1000 progeny are obtained c+ r h+ --- --- c r+ h X c r h+ --- --- Y h Based on the progeny from this cross, which of following statements is FALSE? A. 4% of the females are predicted to have carnation eye color and rudimentary wings. B. 50% of the flies with hairy bodies should be male. C. 25% of the total progeny should have hairy bodies. D. 345 flies are predicted to have carnation eyes, wild-type wings and smooth (not hairy) bodies. E. 230 flies are predicted to have wild-type eye color, rudimentary wings and hairy bodies.
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In the fruit fly, Drosophila, ebony body color (e) is recessive to wild-type body color (e+) and the gene for this trait is autosomal. Carnation eye color (c) and rudimentary wings (r) are recessive mutations in genes located on the X chromosome. The map distance between c and r is 16 cM. The following cross is performed and 1000 progeny are obtained c+ r e+ X c r e+ c r+ e Y e Based on the progeny from this cross, which of following statements is FALSE? A. 75% of the total progeny should have wild-type colored bodies. B. 210 flies are predicted to have wild-type eye color, rudimentary wings and ebony bodies. C. 315 flies are predicted to have carnation eyes, wild-type wings and wild-type body color. D. 50% of the flies with ebony bodies should be male. E. 8% of the females are predicted to have carnation eye color and rudimentary wings.
You have crossed two Drosophila melanogaster individuals that have long wings and red eyes- -the wild-type phenotype. In the progeny, the mutant phenotypes called curved wings and lozenge eyes appear as follows:
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