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 red, long
radish is crossed with a true-breeding white round radish, give the F2 genotypic and phenotypic ratios. What will be an ideal response?


ANSWER: 1 LL RR long red, 2 LL Rr long purple, 2 Ll RR oval red, 4 Ll Rr oval purple, 1 ll RR round
red, 2 ll Rr round purple, 1 LL rr long white, 2 Ll rr oval white, 1 ll rr round white

Biology & Microbiology

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