Two unaffected parents, I-1 and I-2, have three children: II…
Two unaffected parents, I-1 and I-2, have three children: II-1 (affected), II-2 (unaffected), and II-3 (unaffected). The disorder is rare and single-gene. Using A (dominant, normal) and a (recessive, disease), what is II-1’s most probable genotype?
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