Two-point linkage, modifications of Mendelian ratios, lethal alleles, incomplete or partial dominance

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Department
Soil + Crop Sciences
Course
SOCR 330
Professor
Sarah Ward
Semester
Fall

Description
9 September Example of Two-Point Linkage Problem in Drosophila Eye color and wing type controlled at two linked loci B/b = red/cinnabar eyes W/w = normal/waxy wings Normal winged red-eyed double heterozygote female (BbWw) mated with waxy cinnabar male (bbww) Normal wings, red eyes 63 Normal wings, cinnabar eyes 196 Waxy wings, red eyes 187 Waxy wings, cinnabar eyes 54 500 Genetic distance between B and W? 23.4 cM Take 2 smallest classes (54 + 63), that’s where recombination occurred. Divide by total (500). Configuration of B and W loci in female parent? TRANS (repulsion) Modifications of Mendelian Ratios Lethal alleles Incomplete dominance
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