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BISC320_exam3 - Last Name Bdfl First Name a LEE—N Page...

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Unformatted text preview: Last Name: ( Bdfl First Name: a ! LEE—N Page Total: {>1 ' (10 pts) 3. (a) When they “jump,” why do poly A—type transposons (and also retroviral transposons) always leave a copy of the transposon behind at the original (integrated) position? (b) Do some bacterial transposons utilize an RNA intermediate in “jumping" from an original position to a new target site? (Please explain your ‘yes’ or ‘no' answer.) M L13, um - -— egg-48592:“ éé—Mté‘ M Km“ gen-3‘94 Matte a, «M H J/ ' M r11: 0 kl ngM . {that W M Sc emi“\\/\QLQ/ V +0 Sfigm-L f'm‘flE" If” kfi‘fi'flxLL __ .W.flz.fi_¢& m th,fl Angus; «OWJHna (taut-we) m§°)flf°+‘“‘“ {- W Mnst-‘rfim M uHI'IL—c 9m 5?»;va ‘33. 't‘QH-EO'W‘H :1 (Va) no, eukomawm usc+w RNA Mia/Mahfiete .- Léefi¢W7m WWWSMS , WU“ M ("oswnrzxs (a, em), I arf W 4" ”“4 {Sim “FVS’V> To W Iom-H‘Irvx; * - " \/\ A u MwsL ihk’CS ‘Cal;f\,:3 anSmJl) P’ws) M (W h VQVLA/évf (,9 H Logvb DNA (awe—W tQNPr [WMhduzJ—_ (10 pts) 4. In creating new genes that code for immunoglobulin (antibody) light polypeptide chains, how are the proteins RAGl and RAG2 utilized in combining a particular V region with a particular J region in chromosomal DNA? W"‘_LN\§:‘];;_E'MR?J~JRZJ-H1‘ {Mad E'Z art qu/d‘s‘fim WMVMM'W M IB‘SarU/mafibfl *Wj4mm a W400? Smchre 'rrx whit/la Qfireqlp-mm hind-“9° “HM ”WP IR wiumu.’ bvwbx m RW’L Jco mm m (\LlC/\CQ_ This owls. 2h (17,, and {xx/WW3 in mW-Uzvx . 9cA/kak' 4M7” “ELAML‘AB \J 5, m4 (3'; can WI‘inGh/CW, W {M vmrwi - 1‘; U‘v/ lmmud: 047m ‘wwfigoamrs «Mm, “Ms WK M) i: F gnu-w 96 MW‘ «3 H ('5. 2 {5 Q ‘ igctouv‘v‘ 47% go mean-a WH’ m3m9h€ V|_L.. ._ Last Name: LWFHM Name: L Page Total: 4%? vl-~m\ flee-fir (10 pts) 5. Why is the carboxyl terminal domain (CTD tail) of the large subunit of eukaryotic RNA pol ll able to load specifically the capping and splicing factors on to a nascent, growing pre—mRN A strand? W C-TD +03! COnWMS Mm: Sflclucmug (91 In kquus) 5" weMWfio-LLS C3!" fiwxfno quarks“) _ l'V‘ Wag, POST-14M; ‘2’? , g } c/gvxg\s+ 6f SMM “JANA“. WW EkoseLthIa—LLpé/ I UNOKOQ B‘TF'J W‘A \°""’( amid-4m haw; 't‘o WWSW'N (Firm/w Wbmkarofiod-moSCVCPJfim int-H‘wl-Ym htlm’jarflm ' " «(REIM- Fwflwom’mwmfi was 2 ml we 6? “3: Ir_-__'—_—____"—-"-——_________‘_ ‘ ‘- Ygewnm WPMS avwl 69MMWBW 't'o Arm pm-w-PQNPF’ { I , i O (10 pts) 6. How do most eukaryotic pre—mRNA strands come to have a poly A tail at their 3‘ ends? QYPW (AmsMaMfi) Xcvxparnsm (9% M W, 638;: fifi-aomgfb am frwkprfi g-cfiowbgllovyfiqya w Ca“: +0 cUme AJV A Q or exp—Nan gmwln 81W ' ‘ H .' WNW I\f\\ :\6\. SW0 $0t~b 91'“ ka W “MM“: law-0””: 9°“ 0 '% fig dvx flung-W 39-151; H‘3_ Last Name: ( AM First Name: Q] Uflf/Px Page Total: ’5 '(10 pts) 7. How do SR proteins initiate spliceosomal splicing within pre-mRNA strands? (It i is not necessary to describe the entire assembly of new spliceosomes—just how they start to 4’ [J S be made.) \ t ' 59 e Ici‘nS CW'O‘M M 4 RS CfDMIM'n [WW 1” area :n-‘VNQ C W”) and. thHO— «(‘5‘ a QRM WO'l—El'. 1W3 low M §9\\vbwws fa wPl’f'MF—Nfl prlb fibhos?k/0Qr [1.9. .m mama? «to W 5 99> ,5 ———- Sfi mi blLD‘L-n "‘b SE Sex _ 11 51‘? allKPHflbLS fiPbP P ‘lTVLyti‘ n 9+? \365 I \Jl _ A! \My WQPUxLM‘. \M ('0 5'85 { a’ ‘ fi'é" 5” ' i V ‘3 I. ‘ éelétwmg we (ml/{oval} \Myfi UH Com :M—waer f fivM “Wfil~ \l/ ' 1 w; 6’ 3'53, 6““ Mums “WWE ‘3'? 3 55's. “.‘Avlfm‘lmrhfi'l' Shed-wt Kwseol (10 pts) 8. Why is it necessary that cells carry many species of aminoacyl synthetase (tRNA “charging” enzyme—the enzymes that attach an amino acid to a tRNA)? gr 3m [email protected] /¢ ,t'Tt/mrroal“ Culg M94; Maw-a nm'mnaojl S'an/u-Jcfigg (77.0) ' “Rm?"w‘vtl‘ bicowk l—mve arfi W 20 fill-FEW‘F ”WM" S‘tquYM‘l‘fiW ‘ mm aarAg omol tat awhucaws l—c: Ma—‘rck-l'w WRLHA, “PVT“"“0-’\LA3\ ‘5me Jam-”LE “V‘s-t “MM LO th‘umw.) Ro‘xalsdloq/w +W‘\r\ml mill/WM ‘5’" "PM 3‘ CG'P‘ 1* ‘HM finer Viv-moi I, Mat/m?) 6 Maw-ASHE 6?? m schFHL Gin-H LDJDOA’ my “I WC-S pig-\— 19.0w gg-Ccll-R 3-5““ (in-Hegel‘s“ -t lvxska cl, a‘fr‘t‘s flvxfil ~HKN1°TS mutt-clam v? 133 +RNJJ LaWaRm ‘ GUM" {RN-fig “W GKWAHWW_ Last Name: ( JQA First Name: fl: W‘- Pag 0 \NM /lo.¢~aw (1 ts) 9. What effect does domination of the cytosine in a CAA codon in an mRNA strand ha e on ynthesis of protein when the strand is translated by ribosomes? (Assume that prior to a nation, the CAA would have been translated in the correct translational reading fr Denmthax'fiw O'F' oft-vsm d-mqvw'tj ‘fi +v V/‘Cto‘tl ’Jrhv5 aka-05, a5 abut 6% («Mon +0 oA-o, woo gt. w 06—3 3+6? tacit-MS, “CRANE m1" ‘vt WWW WWW‘VLE Ladonfi _ _ ‘- x ‘ 0 $794.? (Eff-t Cooktfiw' ‘7 MMGV‘9hF" COMM“ 5“ ‘ m “6"“er P w) Fifi t. - ~ t . . all\s) \J Jaw-IS L79 Sm}|cfin+g~3 SkWrflNi’aJ'kfi Wtjdfl‘ fin "oats (malt Lott-HA5 is cal“ Swell—FL ' m3. shwn m Lng' MHS‘i-‘aflai OHS - 1"“ [QWM%WL£S Cfi'fl wwmhéfiml wwz/k'ts winna arm p gytcfl'xl ‘t'fmwf'trok-TJH 15 CWTHLM Stow-Hy ( 0 pt ) 10. During initiation of translation of eukaryotic mRNAs, how does the protein 1" ctor IF4F cause circularization of the mRNA strand? e1F4F {mean at? Samar—I3 Eh. m4 ft +9 otrwtoriaca. V—IardaPr. E 1.30:5 TD 4N S' Clef? 0+ W Mammy-«3 eff—W WMR. WM' 5‘ ”M" “*WEFLT 3°? fiztméaht. B 13:13:45 to {M (WRNW Wafhfam 5?- m é‘ use aw! Wm 3' [emu-fig My 44mm: MM} \anto‘ W1 MRNFt [n h kac‘r ng‘fiw ...
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