Question

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In radishes, red (R) and white (W) are pure-breeding colors, while hybrids are purple (RW). If a red radish is crossed with a white radish, what percentage of the phenotype will be purple?




In radishes, red (R) and white (W) are pure-breeding colors, while hybrids are purple (RW). If a red radish is crossed with a white radish, what percentage of the phenotype will be purple?




50%


100%


25%


75%

Answer 1

The phenotype of the offspring from a cross between a red (R) and a white (W) radish will be 100% purple (RW). This is because the phenotype is determined by the dominant allele (R) and the recessive allele (W), and the hybrid offspring will express the dominant allele, giving them a purple phenotype.