When a true-breeding plant bearing yellow seeds produces gametes, what alleles are represented among those gametes?

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Quizplus · Accepted Answer

A true-breeding plant always produces offspring with the same phenotype and genotype as the parent. Therefore, it must have two copies of the same allele (either AA or aa). When it produces gametes, each gamete will receive only one of the alleles, so all of the gametes will have the same allele. In this case, since the parent plant has yellow seeds, it must have two copies of the yellow allele (A). Therefore, all of its gametes will have the A allele.

When a True-Breeding Plant Bearing Yellow Seeds Produces Gametes, What