2008 S final key - LS4.1 FinalExam g June 2oogstudent*^...

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LS4.1 Final Exam lt l(tq June g, 2oog student *^ " L'-* { un V Wed 3PM 3 Thurs gAM Thurs 11AM Thurs 1PM Discussion section (circle) Wed 1 1AM Wed 1PM 5 Total Tall plants with y llow flowers clossed with short plants with white flowers yield all F1 tall progeny with white flowsrs. Self cross of the F1 yields the following F2 progeny: 90 tall white, 30 short white, 30 tall yellow, 10 short yellow. 1 ) What numb r of the F2 progeny areexpected to be pure-breeding if self-crossed? (a) 10 (b) 30 [email protected]!o (d) 60 (e) 80 The couple lll-4 and lll-5 expect to have 3 children. rr ilI 2) What is the chance 2 of the 3 will have the rare autosomal recessive condition found in their families? (a) 1/64 (1.60/0) @staagtv"l (c) 9164 (14.1oh) (d\ 3t128 (2.3V.1 (el9t128 (7 .o%) Consider a population of cell phones that come in colors: yellow (Y), green (G), red (R) or blue (B). On Yx B couple had 1Y,3 G, 1 Rand 3 B progeny. OneGxGcouple hadOGand2Y progeny. OneRx G coupfe had 2 G, 2R,2Y and 2 B progeny. 3) What are the genotypes of the R x G couple? (al YG x RIB (b) VRx GtB (c) RrYy x GgBb (!) RrBb x GsYY l DrrGo x Rree 10 lf
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Ka A pair of homologous chromosomes are distinguished from each other by a knob at the end of one chromosome. A cell with this pair is observed in division as shown below. 4) Which division is indicated? [email protected] anaPhase (6) meiosis anaPhase I (c) meiosis anaPhase ll (d) either meiosis anaphase I or meiosis anaphase ll (ei either mitosis anaphase or meiosis anaphase ll Pure-breeding female Drosophila with rcund dark eyes crossed to pure breeding males withnarrow r6cl eyes give all daughters with nanow redeyes and all sons withround dark eyes' 5) What progeny do youpredlct from a cross of pure-breeding females withnarrow redeyes to pure breeding males withround dark eyes? ({all narrow datk eyes {!f all narrow red eyes (c) all round dark eyes idi all daughters withnarrow red eyes and all sons with round dark eyes iei att Oaugnten with dark round eyes and all sons withnanow redeyes A test cross of genotype a +/ + b corn gave 20 percent + +/ab corn' 6) What % + +/+ + corn do you expect from a self cross of genotype a b/+ + corn? (a) 4o/o (b) 60lo 6)gY" (d\ 20o/" (e)30% Marker c is 5 map units (mu) from D, and c is 10 mu from E CCDD ee is crossed to cc dd EE when the resulting Fr is testcrossed, the frequency of cc dd oe prog ny is slightly l ss than5 percent. 7) Which order of gene (inteNal distances) best fits the data? [email protected] c1sl a MarkerA is 10 mu from B, which is 20 mu from C. The gene order is A-&C. You test cross the A I C/ a b c hybrid and count 1000 ProgenY. 8) How many a b c gamete types areexpected? (a) 150 (b) 300 (c) 340 ^4dl36s ' (e) 680 Af
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k2 Plate A is minimal medium (MM) + proline + lactose. Plate B is MM + proline. Plate C is MM only. Plate D is MM + histidine. Plate E is MM + histidine + lactose. Bacterial strains --some with known genotypes-- are selected on each plate.
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  • Winter '08
  • merriam
  • chromosome fusedto chromosome, MMfor master plate, C D F G H P T, lt hasa, inhritanc cytoplasmic inheritance

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