hw3 - Genetics Homework #3 due in lecture August 26 1. You...

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Unformatted text preview: Genetics Homework #3 due in lecture August 26 1. You are studying the genetics of feather color in canaries, and have several birds with unusually colored plumage. You cross the birds with truebreeding wild type canaries (AABBCCDDEE). The F1s are then testcrossed to aabbccddee to yield the following F2s. Cross #1 with unusual parent aabbCCddEE X AABBCCDDEE, F1 then crossed to tester to yield: Phenotype ABCDE abCdE ABCdE abCDE AbCdE aBCDE AbCDE aBCdE Total # of Progeny 312 318 34 36 126 144 14 16 1000 Cross #2 with unusual parent aaBBccDDee X AABBCCDDEE, F1 then crossed to tester to yield: Phenotype ABCDE aBcDe ABcDe aBCDE ABCDe aBcDE aBCDe ABcDE Total # of Progeny 248 232 54 66 163 157 38 42 1000 You also know, from unpublished data, that genes D and E assort independently. Draw a map of these genes, showing distances in map units wherever possible. Is there any evidence of interference? 2. The following table shows the map distances between 6 different genes. Construct a genetic map that includes all 6. Nl Ri Lw Rl Ac Sn Nl 2 23 7 11 12 Ri 2 25 9 9 14 Lw 23 25 16 34 11 Rl 7 9 16 18 5 Ac 11 9 34 18 23 Sn 12 14 11 5 23 3. Exploring Genomics, Chapter 5 (page 134). ...
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