In Radishes,two Incompletely Dominant Genes Control Color and Shape

question 42

Multiple Choice

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

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