In radishes,two incompletely dominant genes control color and shape.Red (R)is dominant over white (r),and heterozygotes are purple.Long (L)is dominant over round (l),and heterozygotes are oval.If a true-breeding long,red radish is crossed with a purple oval radish,give the F1 phenotypes and their percentages.
A) All long red B) 25% long red, 25% long purple, 25% oval red, 25% oval purple C) 25% long red, 50% round purple, 25% round white D) 25% long red, 50% long purple, 25% oval white E) 25% oval red, 25% oval purple, 50% round purple