7) You do a trihybrid test cross for triple point mapping in Drosophila melanogaster and get the following results. m+q+

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7 You Do A Trihybrid Test Cross For Triple Point Mapping In Drosophila Melanogaster And Get The Following Results M Q 1 (45.6 KiB) Viewed 98 times

7) You do a trihybrid test cross for triple point mapping in Drosophila melanogaster and get the following results. m+q+r- m-q-r+ m+ q+r+ m- q- r- m+ q- r- m-q+r+ m-q+ r- m+ q- r+ total 141 133 47 56 15 12 3 6 413 What is the relative order of the genes on the chromosome and the CM distance between them? A) m-8.7-q-27-r B) q-25-m-6.5-r C) q-25-r-6.5 - m D) q-27-m-8.7-r
6) You find a new species of yeast that seems to be able to ferment cellulose to produce ethanol. You are interested in using this to produce fuel from waste paper and want to understand the biochemical pathway. You generate several mutant strains using X-rays that cannot produce ethanol unless you add certain compounds to the growth media. Mutant A can produce ethanol if you add xylitol or xylulose. Mutant B can only produce ethanol if xylulose is added. Mutant C can produce ethanol if either xylitol, xylulose, or xylose is added. Order the steps in this pathway and the gene products that carry out each conversion step. (Hint, it really helps to draw out the steps and rearrange them visually.) A) xylulose B → xylitol → A → xylose → C B) C → xylose → A → xylitol → B → xylulose C) xylose B → xylitol → A → xylulose → C D) B → xylitol → A → xylulose → C → xylose