BIOL
Exam+1+--+Spring+2005+--+ANSWERS+_do+not+distribute_

Exam+1+--+Spring+2005+--+ANSWERS+_do+not+distribute_ -...

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Spring 2005 Genetics 305 Exam I, form B Spring 2005,May 19 Exam IB Name { Section (circle one): Sh4n Ke"ry {j:l""_-3)r"o. ID#: Please put your name on the top of at e_{am pages, including this page. Each question hasone most correct answer. 10,i ma! or. u p*ril when working on the exam, b"t " trfyou have any questions, please ask a procto- ,''i , 2 r'd ,l e fi:A,' t'9J" e e c c c c 3 4 .( "t 7 d/fi \*< da) d -"'9-) d d d "{ a$ v'i,o 9 ) . G J c d PaTt II: True or False - l0 check qwestions: f v9u feel some questions or answers warrant more lengthycomment, please mark the test pages and then indicate on this pug, *r,irhlurriiors we shourd look over: E#'-t fr +ta-{, -[uriu{euE} or:c.,r r^ wry-o7or, are finisheh, submit borh the,,t}'oHJ;,.ilil;;;;. " u1i!J l a b I a b a b u.ffi r3-: b ffiu a b ( a b a b a b a b c G ) . a o } a 0 (&o /h a (.!, { p b 6 d e ."-\ t Y d e c d e c d e ,|9,i d e c d e a b :{9"ffi 'r} e b S o e ,)z a b " e " - ' i ; a b : d C 2 4 a b J d e 2 s a b c d0 wili6 r \ \ $ b c d e t I 7 t& c d " ,iis ar, ; c d e 'zs \'r' rf,, a b rU) e '.36 1 I 2 r S 3 riil 4 rffi, r *ug; 6 &, F t1,' F 7 8 r (t) r iF) 9 l0 /T} F T I F r 6{6pr'L urnr,ln6io*i'r.o*rr !t il;I" ur-4il*Tt{H"4j"q;a6s^-j
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Dprtng zuuJ a 9/32 b. 9/16 3/64 7 t i L t + 3/16 Exarn tr lll ir #i " 1 1') Given two nmenl of genotlpe h;#,.#f-AaBbccdd, what is the probability that their child is heterorygous for any 3,lo*cj? Assume independent assortment between these 4 gene loci. -."i..r 'Tt'' , i-.; t il' ri , i: , {i.. . i l . ' l ' ' , i ii-,: i. ' r:r rr:: i:..j b ,-, ""! i{ ' i "" 'l il, I,r I .: 1:,"' rt 1,, ,i ' I ;. I ,iifr l d l * : l ' 1 , : t-l ' ii:,':::-" rt"rl. , -'-5\ -dL4w V' e. 2') Both you and your spouse oonoe from families affected with silver spoon disease, a rare autosornal recessive condition. Your brother has the diseaseo none of your spouse,s siblings have the disease, but one ofhis/herparents bas the disease. A genetic counselor tells you that - yeur first child hadabout B.3zo probability of being affected-\\thy? -/" /. the trait has 100% penetrance b. the trait has2l%penetrance c. the trait Mszl%eryressivity d. the trait fuszl%penefiance andS}%expressivity Ie. )the trait has 50% penetrance l[dr." '# d{ ;b**-lt,#? A-1 L) l i ,.r i, q,/' -J i - i & 3') In chickens the white plumage (feathers) ofthe longhorn breed is dominant over colored plumage, feathered ihankt utt Jo*in*t over clean shanks, and pea combs is dorninant over singlecomb' Each ofthese gene pairs areautosomal and assort independently. If a homozygous white, feathered-shanked, pea-combed chicken is crossed with a homozygous colored, clean= shanked" single-combed chicken and the Fls arealtowed to interbreed, what proportions ofthe birds in the F2 will produce only white, feather-shanked, pea-combed progeny if mated tq colored,clean-shanked, single-combed birds? 1 fi,': tr,.tl q'.f ,i: r;l f.r, i1:, ';. 4- i "s,l*.i'r,;l ln''l i , . r_;1".':.-{': i.,.-..i '"l ( !-1. ; l 4 [\ / i ta-, a. l/8 b. t/72 G. )tle+ d. 3/64 e. 1116 , i i , : i,i_ri'} r-i{j. l:"ii"lrl,iirii1 i1l" ri { *ij ' ,:, , '.. : *;i +-1 riii. il '..i. . 'r i i {"i
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DItr tft8 zuuJ Exam I 4') The four cells shown below are all from the same individual fly, Drosophila ricroma.
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  • Fall '10
  • ZHANG
  • Genetics, Trigraph, Trait, iL, MN Rh, ala gry ala

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