Use the following information to answer the questions below.
Radish flowers may be red, purple, or white. A cross between a red-flowered plant and a white-flowered plant yields all-purple offspring. The part of the radish we eat may be oval or long, with long being the dominant characteristic.
-If true-breeding red long radishes are crossed with true-breeding white oval radishes, the F₁ will be expected to be which of the following?
A) red and long
B) red and oval
C) white and long
D) purple and long
E) purple and oval

Question

Quizplus · Accepted Answer

The cross between true-breeding red long radishes and white oval radishes produces offspring that are all purple in color. This indicates that the white-flowered plant has a recessive allele for flower color (since it does not express the dominant red allele) and the red-flowered plant is homozygous dominant for flower color. The fact that all the F1 offspring are purple indicates that flower color is inherited in a simple dominant-recessive pattern. The F1 offspring are also all long because the long trait is dominant over the oval trait. Therefore, the expected F1 offspring would be purple and long (choice D).

Use the Following Information to Answer the Questions Below