This question relates to Mendel's breeding experiments with peas. A true breeding plant producing smooth peas was crossed with a true-breeding plant producing wrinkled peas (cross 1). The offspring of cross 1 all produced smooth peas. The offspring of cross 1 were then crossed with the wrinkled-pea parent (cross 2). Which of the statements about the cross outcomes are true? Please select all that apply.

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Quizplus · Accepted Answer

All offspring of cross 1 have smooth peas, so the wrinkled allele is recessive.
Cross 1: Smooth is dominant, so S is the smooth allele and s is the wrinkled allele. All offspring have Ss genotype and have smooth peas.
Cross 2: Offspring of cross 1 are Ss. Wrinkled parent is ss. Half offspring are Ss (smooth) and half offspring are ss (wrinkled).
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This Question Relates to Mendel's Breeding Experiments with Peas