BIO 198 Genetics - Exam 1 - 2007 Key

BIO 198 Genetics - Exam 1 - 2007 Key - f’ ' NAMEfl E14...

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Unformatted text preview: f’ ' NAMEfl E14 fl Lg Teaching Assistant: Colleen Deby (circle one) Campbell Abby Caitlin Shweta Jessica Steve B10 198 GENETICS EXAM I September 24, 2007 50 Points 50 Min (1 Points/Min) Instructions: 1) Write your name at the top of each page. 2) Circle your recitation TA’s name. Exams will be returned in recitation. 2) Answer questions, in the space provided, using ink (non-erasable). (Answers written in pencil will not be considered for regrade.) 3) Be clear and concise. Use pictures or diagrams where appropriate. If you change an answer, clearly cross out the information you do not wish to be considered by the graders. l)___/8 2)___f5 3)____/ 10 4)__/ 15 5)_____/ 12 TOTAL 150 NAME 1. (8 points) Define the following terms: i. Allele tax—Q ANT“; \“E‘F‘Smws 5*- c VSL‘ B K, Ck i » “ER (39"; “a ‘MI‘VJJW Wad C3213 6 ( ’l/V‘ (-3, CNN, y ’ 71’ MM' u r» k P! A l k \‘a/{mr Jfo VthJJ (543+ 1 (Tam/{Ml iv. Hemizy gous I \x/ A r- ' r r K ' H 5 a ' _, LL . Mu \nv‘; gm“ g/w i V «Km -:. CL (.3; _.n v I @ D 7 x I .5 w “L x k, Cgfiffl \A l-'\ \Ll- '\‘;< AK . .‘J v. Contlnuous van atlon fl - I a _$ _‘ A n. In '.\ .x ‘7‘ >71. ‘ % Qu‘w"\ xM‘-f\‘®1’%{<%'\r’\ r'léllw/‘St Of: \E’z Ni flag "' i" 3 .4 \ J \J - i NA ME 3. (10 points) Dr. Sia is colorblind, the pedigree below represents Dr. Sia’s family. 30/ 7:“! '72s KY is?" K a. (1 points) What is the mode of transmission of colorblindnes (Autosomal dominant, autosomal recessive, X—linked recessive, X-linked dominant, Y-linked or cytoplasmic)? “(m/Q I “24“ “Viki/33 {LJ M39 b. (5 points) Assign genotypes to all individuals in generations ll & III of the pedigree (be sure to define your symbols). - I; 12' O t“ We W. 0K lb MC [Puoewfksqmmls (do a/y am 41: Wan X‘s/y £- c. (4 points) Dr. Sia has 2 children, a son and a daughter. Add these two children to x ‘L/ x49" generation IV of the pedigree and indicate their phenotypes and genotypes using the r ' QM” P ’5 appropnate symbols. [br- @ 5f€mfig We“ (gt/b, ,5, m. Pewcfvae(cmyednl colored WWW/5) em Hm O :2 L, Pis’ @X am is’ —--> Cieno‘? P‘WO 50” Fm- anm WM veteAS‘YV‘ei NAME 4. (15 points) Draw a diploid cell with a single pair of chromosomes labeled M & P before DNA synthesis and then draw a figure demonstrating what these cells look like at Metaphase of mitosis and Metaphase I & II of meiosis. These figures must be neatly drawn and the chromosomes clearly labeled for full credit. 87> mzm MHr- 4 WM .1 gfl'fioofin b mm ' NAME 5. (12 points) In pigeons, a dominant allele C causes a checkered pattern in the feathers; its recessive allele c produces a plain pattern. Feather coloration is controlled by an independently assorting gene; the dominant allele R produces red feathers, and the recessive allele 1‘ produces brown feathers. Birds from a true—breeding checkered, red variety are crossed with birds from a true-breeding plain, brown variety. a. (2 points) Predict the phenotype of their progeny (Es). \ 7 h ‘ Limgcvul QC, \- Ecfl rr— 2.: . P191,“ C C R" Fifi): afiw a at } 1 .) brow n I i g tmldi‘it + xvii-FE: r b. (4 points) What gametes will be produced by these Fls? l‘nciapmcicnl Jim‘s: rimmin- CE gr Q R .k C. r“ F EVIL C: R a)?" vi a r )r c. (6 points) If these Fls are crossed, what phenotypes will appear in the F25 and in what proportions? ‘7 CCLRJ" 1C; Rf 4:» or; as. m CL pr l/il-P (,9 RR if CE W Lama Cg pd mat Thgjmmw‘awma Aim CC- Rt" m 1:; m; {spasm ' 'hm (“V”) filhf'rofl (Pi???) ligv:hribwr: 1/“ 9“: RR Vic: ea or “30¢ ac, Rf“ NAME 2. (5 points) Suppose that red flower color (RR or Rr) is dominant to white flower color (rr) in Petunia. A friend has a petunia plant with red flowers and wants to determine whether the plant is RR or Rr. i. (2 points) What cross will you perform? m- x - #75 ii. (1 points) What is the name gfihis type of cross? Qe’)’ 5/055 ii. (2 points) How will this cross help you determine the genotype of the red flowered petunia? That is, how will the results from this cross differ if the red-flowered petunia is RR vs Rr? ...
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This note was uploaded on 04/17/2008 for the course BIO 198 taught by Professor Sia during the Spring '08 term at Rochester.

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BIO 198 Genetics - Exam 1 - 2007 Key - f’ ' NAMEfl E14...

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