Allele: An allele is a variant form of a gene, representing different versions of the same gene, and individuals inherit two alleles for each gene, one from each parent.
Sample Cross: In a cross between a smooth-seeded pea plant (SS) and a wrinkled-seeded pea plant (ss), the phenotype for seed texture is either “smooth” or “wrinkled.” The genotype possibilities for the offspring are SS (homozygous smooth) or Ss (heterozygous), all showing a smooth seed phenotype because the smooth allele is dominant over the wrinkled allele.
