Wright BIO 2110 - Rec8_three-factor crosses (3 pages)
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Rec8_three-factor crosses
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- Pages:
- 3
- School:
- Wright State University
- Course:
- Bio 2110 - Principles of Molecular and Classical Genetics
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Unformatted text preview:
BIO 2110 Genetics Recitation 8 Name Group Members Construct a recombination map from the three factor cross data shown below In these crosses progeny genotypes are shown in pairs of reciprocal chromosomes derived from the heterozygous parent Include all five genes A Q R X and Z in a single recombination map You do not need to calculate recombination distances between genes only gene order on the chromosome a x q a x q AX Q x a x q AX Q a xq 280 280 AXq a xQ 120 120 Ax q a XQ 30 30 AxQ aXq 70 70 a z q a z q AZQ x a zq AZQ a zq 176 176 AZq azQ 32 32 Azq aZQ 72 72 AzQ aZq 8 8 a x r a x r AX R x a x r AX R a xr 428 428 AXR a xr 52 52 Ax r a XR 112 112 AxR aXr 8 8 On your recombination map the recombination frequencies from A X and from R X are 0 2 and 0 1 respectively Based on these recombination frequencies how much crossover interference is there in this region of the genome List in order the major steps that occur during meiotic recombination Based on these steps explain why meiotic recombination is precise to the nucleotide
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Study Guide: Midterm 2
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