[Campbell Biology P.331] According to the simplified model in Figure 14.13, what is the prob... | Practice Question

According to the simplified model in Figure 14.13, what is the probability of an offspring having a skin color phenotype represented by exactly 4 dark-skin alleles from a mating between two AaBbCc individuals?

  • A: 20/64
  • B: 15/64
  • C: 6/64
  • D: 1/64

Explanation

The bar graph below the Punnett square in Figure 14.13 explicitly shows the phenotypic frequencies. The bar corresponding to '4' dark-skin alleles aligns with the fraction 15/64.