ch05.pdf - Exam MULTIPLE CHOICE Choose the one alternative that best completes the statement or answers the question 1 When two genes fail to assort

ch05.pdf - Exam MULTIPLE CHOICE Choose the one alternative...

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ExamMULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.1)When two genes fail to assort independently, the term normally applied is ________.1)A)discontinuous inheritanceB)tetrad analysisC)Mendelian inheritanceD)linkageE)dominance and/or recessiveness2)Assume that a cross is made betweenAaBbandaabbplants and that all the offspring are eitherAaBboraabb. These results are consistent with the following circumstance:2)3)Assume that a cross is made betweenAaBbandaabbplants and that the offspring fall intoapproximately equal numbers of the following groups:AaBb, Aabb, aaBb, aabb. These results areconsistent with the following circumstance:3)4)Assume that a cross is made betweenAaBbandaabbplants and that the offspring occur in thefollowing numbers: 106AaBb, 48Aabb, 52aaBb, 94aabb. These results are consistent with thefollowing circumstance:4)5)Assume that, regarding a particular gene, one scored 30 second-division ascospore arrangementsand 70 first-division arrangements inNeurospora. What would be the map distance between thegene and the centromere?5)A)60B)30C)70D)15E)insufficient information provided to answer this question1
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6)The phenomenon in which one crossover increases the likelihood of crossovers in nearby regions iscalled6)7)Methods for determining the linkage group and genetic map in humans involve which of thefollowing?7)SHORT ANSWER. Write the word or phrase that best completes each statement or answers the question.8)The genes for mahogany eyes and ebony body are approximately 25 map units apart onchromosome III inDrosophila. Assume that a mahogany-eyed female was mated to anebony-bodied male and that the resulting F1 phenotypically wild-type females weremated to mahogany, ebony males. Of 1000 offspring, what would be the expectedphenotypes, and in what numbers would they be expected?8)9)Assume that there are 12 map units between two loci in the mouse and that you are able tomicroscopically observe meiotic chromosomes in this organism. If you examined 200primary oocytes, in how many would you expect to see a chiasma between the two locimentioned above?9)10)Diagram chromosomal events that will ultimately result in the segregation of alleles (Aanda) during Meiosis II rather than Meiosis I.10)11)
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  • Fall '19
  • Chromosomal crossover, BUdr

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