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quiz4 - Genome 371 Braun/Pallanck Name Spring 2005 Quiz 3 1...

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Genome 371 Spring, 2005 Braun/Pallanck Name: . Quiz 3 1. You have identified a novel behavioral mutant of Drosophila that bounces around in a jerky fashion following a gentle tap of the vial containing this mutant. You hypothesize that this mutant (which you name slamdance , given its phenotype) may represent a model of epilepsy and you proceed to carry out experiments to map the location of the slamdance gene. You cross a slamdance mutant male to a female stock that is homozygous for the wild type allele of the slamdance gene. The following number of progeny with the given phenotypes were obtained from this cross: 247 slamdance females 248 females 254 slamdance males 251 males (a). (6 points) From this cross what can you say about the dominant/recessive nature of the Slamdance mutation and the possible sex linkage of the Slamdance gene? If you do not feel that the data allows for a definitive conclusion, you should say so. Make sure to justify your answer to this question with an explanation ( please be brief ).
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