Biology / Bio 1027 · Atom · ~20 seconds
Genotype and Phenotype, Locked Terms
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A genotype is an organism's allele combination at a locus; a phenotype is the observable trait it produces, and this course fixes both terms.
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Two pea plants with different genotypes, YY and Yy, can share the identical yellow-seed phenotype.
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Inferring a genotype directly from a dominant phenotype is the mistake — a yellow-seeded plant may be YY or Yy, hence testcross 1037.