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Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
Edition 11ISBN: 9781292139456 Exercise 15
Another cross in Drosophila involved the recessive, X-linked genes yellow ( y ) , white ( w ) , and cut ( ct ). A yellow-bodied, white-eyed female with normal wings was crossed to a male whose eyes and body were normal but whose wings were cut. The F 1 females were wild type for all three traits, while the F 1 males expressed the yellow-body and white-eye traits. The cross was carried to an F 2 progeny, and only male offspring were tallied. On the basis of the data shown here, a genetic map was constructed.
(a) Diagram the genotypes of the F 1 parents.
(b) Construct a map, assuming that white is at locus 1.5 on the X chromosome.
(c) Were any double-crossover offspring expected?
(d) Could the F 2 female offspring be used to construct the map? Why or why not?
(a) Diagram the genotypes of the F 1 parents.(b) Construct a map, assuming that white is at locus 1.5 on the X chromosome.
(c) Were any double-crossover offspring expected?
(d) Could the F 2 female offspring be used to construct the map? Why or why not?
Explanation
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Concepts of Genetics 11th Edition by William Klug,Michael Cummings,Charlotte Spencer,Michael Palladino
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