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Punnett squares Knowledge-Based Practice

Biology · Heredity · Biology · Mendelian Genetics

1 Biology practice questions on Punnett squares. Questions that assess core concepts and understanding.

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Questions

  1. 1.

    In pea plants, the allele for round seeds (R) is dominant over the allele for wrinkled seeds (r). If two heterozygous plants (Rr) are crossed, what percentage of their offspring is predicted to have the heterozygous genotype (Rr) according to a Punnett square?

    • A) 50%
    • B) 25%
    • C) 75%
    • D) 100%

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