What is the probability that a cross between a true-breeding pea plant with spherical seeds and a true-breeding pea plant with wrinkled seeds will produce F₁ progeny with spherical seeds? A) ½ B) ¼ C) 0 D) 1/8 E) 1

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Quizplus · Accepted Answer

In Mendelian genetics, a cross between a true-breeding (homozygous) plant with spherical seeds (SS) and a true-breeding plant with wrinkled seeds (ss) will produce F1 progeny that are all heterozygous (Ss) for the seed shape trait. Since the spherical seed trait (S) is dominant over the wrinkled seed trait (s), all F1 progeny (Ss) will exhibit spherical seeds. Therefore, the probability is 1 (100%).

What Is the Probability That a Cross Between a True-Breeding