In zucchini, white fruit (W) is dominant over yellow (w) and disk-shaped fruit (D) is dominant over spherical (d). Determine the genotype of the parents in the following cases: a. A cross of W_D_ X wwdd results in 1/4 blanks and disk; 1/4 white and spherical; 1/4 yellow and disc; 1/4 yellow, spherical B. A cross of W_D_ X W_dd results in 3/8 target and disk; 3/8 white and spherical; 1/8 yellow, disc; 1/8 yellow, spherical Can you show step by step how to get to the results, please

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