Final answer:
The specific fractions of the garden planted with each flower type cannot be determined without an actual list of flowers and their respective planted areas. mendelian genetics suggests that approximately 75% of the F2 generation will have violet flowers when purebred violet and white flowers are crossed. For the scale question, a garden plan 6 inches wide on a 1:12 scale corresponds to an actual width of 6 feet.
Step-by-step explanation:
The provided information does not include the actual numbers or a list of flowers planted in the Langstons' garden. Therefore, it is not possible to give specific answers to parts a, b, c, e, and f of the question. However, for part d of the question, without knowing the proportion of the garden planted with marigolds, petunias, and impatiens, we cannot accurately say whether the statement is correct or incorrect.
For the details on genetics and flower colors as per Mendel's experiments, when crossing a purebred violet flower with a purebred white flower, all offspring in the F1 generation will be violet. In the F2 generation, due to dominant and recessive genes, available evidence suggests approximately 75% will exhibit the violet flower trait, and 25% will have white flowers. regarding the scale for the flower garden, a scale of 1:12 means that every inch on the plan represents 12 inches in real life. Therefore, if the plan shows the garden to be 6 inches wide, the actual width is 6 inches × 12, which equals 72 inches or 6 feet in real life.