380F11SolnPS2

380F11SolnPS2 - 01:447:380 Fall 2011 SOLUTIONS FOR PROBLEM...

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01:447:380 Fall 2011 SOLUTIONS FOR PROBLEM SET 2 Additional Problems 1. The genes that are on each chromosome are different. 2. A. 9 genotypes B. 9 R_Y_ : 3 rrY_ : 3 R_yy : 1 rryy 9= 1RRYY, 2RRYy, 4RrYy, 2RrYY 3=2rrYy, 1rrYY 3=2Rryy, 1RRyy C. The best way to distinguish between different genotypes that display the same phenotype is to perform a series of test crosses. Each strain is crossed with homozygous recessive (wrinkled green) strain. The phenotypes and ratios observed in the F1 indicate the genotype of the parental strain. 3. ¼ short-haired with patches (PpSs); ¼ long-haired with patches (Ppss); ¼ short-haired with solid color (ppSs); ¼ long-haired with solid color (ppss) 4. A) 2/3 B) 1/9 C) 4/9 5. A) P(F1 is Bb and F1 is Bb and progeny is bb ) = 1/9; B) P(F1 is Bb and parent is Bb and progeny is bb ) = 1/6 Chapter 3 23. a) 1/6; The 2 is only found on 1 side of a 6-sided die. b)
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380F11SolnPS2 - 01:447:380 Fall 2011 SOLUTIONS FOR PROBLEM...

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