a purebred purple flowering plant is crossed with a purebred white flowering plant, and they produce…
a purebred purple flowering plant is crossed with a purebred white flowering plant, and they produce offspring that have purple flowers. which is the trait for purple flowers?\ndominant\nrecessive\ncodominant\nblended
Answer
Brief Explanations:
According to Mendelian genetics, when a purebred (homozygous) purple - flowering plant is crossed with a purebred (homozygous) white - flowering plant, if the offspring show the purple trait, the purple trait is dominant. A dominant trait is one that masks the expression of a recessive trait when present in the heterozygous state. In codominance, both traits would be expressed simultaneously (e.g., flowers with both purple and white patches). Blended inheritance (a pre - Mendelian, incorrect concept) would suggest an intermediate phenotype (e.g., light purple), which is not the case here as the offspring are purple. Since the offspring show the purple trait (not a blend and not both traits at the same time), and it masks the white trait, it is dominant.
Answer:
dominant