Consider the following pathway for eye color in Shmoos. Each step is catalyzed b
ID: 168113 • Letter: C
Question
Consider the following pathway for eye color in Shmoos. Each step is catalyzed by a separate enzyme, A, B, or C. Dominant alleles at each locus code for the enzymes, recessive alleles are non-functional. A normal, pure-breeding Shmoo has genotype AA BB CC and has red eyes (red + colorless). What are the phenotypes of offspring, and in what proportions, expected from a cross between these two individuals: Aa Bb Cc x aa Bb Cc ? 27 purple 18 blue 9 red 4 orange 3 white 1 yellow 27 red 18 purple 9 blue 4 yellow 3 orange 1 white 12 purple 9 red 4 blue 3 orange 3 white 1 yellow 18 red 9 white 9 purple 6 blue 3 yellowExplanation / Answer
The answer is option B - 27 red, 18 purple, 9blue 9 Purple, 4 yellow, 3 orange and 1 white.