Class 11 - Exam Monday 6:30-8:30PM Place: Right here, A2B70...

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Unformatted text preview: Exam Monday 6:30-8:30PM Place: Right here, A2B70 MCDB Bring ID, #2 Pencil, calculator You need to know your student #. Friday will be a review class - please email to krauter@colorado.edu questions you would like answered Additional review 3-5PM Monday Sept 22 in MCDB A120 1 Tri-hybrid crosses homework Below is data from a three point cross with flies. Females that are phenotypically wildtype but heterozygous for each of three different recessive mutations [white eyes (w), crossveinless wings (cv) and singed bristles (sn)] were crossed to homozygous males with white eyes, crossveinless wings and singed bristles. The progeny consist of: Wild-type 386 Singed Bristles 38 Crossveinless 3 White eyes 56 Crossveinless & Singed Bristles 46 White eyes & Singed Bristles 2 White eyes & Crossveinless 39 White & Singed & Crossveinless 430 questions were: which were parental genotypes and what is marker order First I like to list the genes w cv sn in the abbrev format - looking at words is confusing to me because I am slightly dyslexic I think. Realize the ORDER is unknown!!! 2 A. w+ cv+ sn+ w+ cv+ sn+ B. w+ cv+ sn+ w cv sn C. w cv sn w cv sn D. w+ cv+ sn+ w+ cv+ sn+ E. Cannot tell without more information From the words of the question, what do the female chromosomes look like 3 Below is data from a three point cross with flies. Females that are phenotypically wildtype but heterozygous for each of three different recessive mutations [white eyes (w), crossveinless wings (cv) and singed bristles (sn)] were crossed to homozygous males with white eyes, crossveinless wings and singed bristles. A. w+ cv+ sn+ w+ cv+ sn+ B. w+ cv+ sn+ w cv sn C. w cv sn w cv sn D. w+ cv+ sn+ w+ cv+ sn+ E. Cannot tell without more information From the words of the question, what do the female chromosomes look like 3 Below is data from a three point cross with flies. Females that are phenotypically wildtype but heterozygous for each of three different recessive mutations [white eyes (w), crossveinless wings (cv) and singed bristles (sn)] were crossed to homozygous males with white eyes, crossveinless wings and singed bristles. A. w+ cv+ sn+ w+ cv+ sn+ B. w+ cv+ sn+ w cv sn C. w cv sn w cv sn D. w+ cv+ sn+ w+ cv+ sn+ E. Cannot tell without more information From the words of the question, what do the female chromosomes look like 3 Below is data from a three point cross with flies. Females that are phenotypically wildtype but heterozygous for each of three different recessive mutations [white eyes (w), crossveinless wings (cv) and singed bristles (sn)] were crossed to homozygous males with white eyes, crossveinless wings and singed bristles. This is because the alleles cis / trans arrangement cannot be known What is the next step?...
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This note was uploaded on 02/25/2010 for the course MCDB 2150 taught by Professor Winey,mark during the Spring '06 term at Colorado.

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Class 11 - Exam Monday 6:30-8:30PM Place: Right here, A2B70...

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