Question

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? dominant recessive codominant blended

Explanation:

According to Mendelian genetics, when a purebred (homozygous) purple - flowering plant is crossed with a purebred (homozygous) white - flowering plant, and all the offspring show the purple - flower trait. A dominant trait is one that is expressed in the heterozygous condition. In this case, the purple - flower trait masks the white - flower trait in the offspring. A recessive trait would only be expressed if the offspring was homozygous for that recessive allele. Codominant traits would show both traits (e.g., purple and white patches) and blended would show an intermediate (e.g., light purple) which is not the case here.

Answer:

dominant