Lab 7 - Lab 7 Bioinformatics Exam reader!!! Answer keys for...

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Unformatted text preview: Lab 7 Bioinformatics Exam reader!!! Answer keys for pre-labs and worksheets are posted in the hallway! Come to office hours in VLSB 2084! Chromosome from (ds DNA) Chromosome from (ds DNA) Locus: location of gene on chromosome ( 1 gene ) Alternative versions of a gene are alleles (2 alleles if 2N) Identical alleles = homozygous Different alleles = heterozygous Dominant vs recessive Wild-type vs mutant Example: 2N=1, 4C in G 2 2N=2 , 4C in G 2 Genetics (Mendelian genetics, linked genes, fruit fly) Chromosome from with sister chromatids Chromosome from with sister chromatids Example: 2N=1, 2C in G 2 2N=2 , 2C in G 2 S-phase Meiosis What kind of gametes? What kind of off-spring? Chromosomes can be: Autosome or sex chromosome x Correction for the ppt from Lab 6 Review A + BC 7 A B + C + 7 A + BC + 25 AB + C 25 A + B + C 73 ABC + 73 A + B + C + 395 A BC 395 X ABC ==== X A+B+C+ X X ABC ==== Y Phenotype off-spring: parentals recombinants recombinants double recombinants (differ in A) X BAC ==== X B+A+C+ X X BAC ==== Y Distance between B and A: Recombinants are AB + and A + B 25 + 25 + 7 +7 = 64 / 1000 x 100% = 6.4 map units Distance between B and C: Recombinants are BC + and B + C: 73 + 73 + 25 + 25 + 7 + 7 = 210 / 1000 x 100% = 21 map units (Note: Some people count the double recombinants twice since they represent 2 recombination events) X ABC Y X A+BC X AB+C+ X A+B+C X ABC+ X A+B+C+ X ABC parentals Mutation is dominant: females F1 get dom trait = all the same Males F1 get traits from mom = show recombination A l l th...
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Lab 7 - Lab 7 Bioinformatics Exam reader!!! Answer keys for...

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