MTII_key_v3 bis 101

MTII_key_v3 bis 101 - 1 Name:_ Last four digits of ID _ BIS...

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1 Name:______________________________ Last four digits of ID __________________ BIS 101 - 003 MIDTERM II November 5, 2010 READ THE FOLLOWING INSTRUCTIONS: Write your name legibly on each page of this exam. All work must be done in ink . Show all your work. Points will be subtracted for incorrect answers in multiple-choice questions. However, you will not get a negative total score for such a question. This exam is worth 100 points. You have 50 min. to complete the exam. Good Luck!
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2 Name:______________________________ P a g e : 3 ________ 4 ________ 5 ________ 6 ________ 7 ________ 8 ________ Total ________
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3 Name _______________________ (1) Drosophila females of wild-type appearance but heterozygous for three linked autosomal genes are mated with males showing three autosomal recessive traits, glassy eyes ( g ), coal-colored bodies ( c ), and striped thoraxes ( t ). 1000 progeny of this cross are distributed in the following phenotypic classes: Wild-type 27 Gg·Cc·Tt Striped thorax 11 Gg·Cc·tt Coal body 484 Gg·cc·Tt Glassy eye, coal body 8 gg·cc·Tt Glassy eye, striped thorax 441 gg·Cc·tt Glassy eye, coal body, striped thorax 29 gg·cc·tt Show the arrangement of alleles on the two homologous chromosomes of the parent female and draw the genetic map based on this data. (10 points) The allele arrangement in the female is G·c·T / g·C·t % R( c g ) = [(27+11+8+29)/1000] x 100 = 7.5% % R( g t ) = [(11+8)/1000] x 100 = 1.9% % R( c g ) = [(27+29)/1000] x 100 = 5.6% 5.6 1.9 Map is c _______________ t________________g
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This note was uploaded on 12/28/2010 for the course BIS 101 taught by Professor Simonchan during the Fall '08 term at UC Davis.

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MTII_key_v3 bis 101 - 1 Name:_ Last four digits of ID _ BIS...

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