Shown in the following table are several amino acid substitutions in the a and B chains of human hemoglobin. Use the genetic code table in Figure 12.7 to determine how many of them can occur as a result of a single nucleotide change. Substituted НЬ Туре НЬЈ Toronto ньЈ Оxford Normal Amino Acid Amino Acid Ala Asp (a-5) Gly Asp (a-15) Hb Gln lu (a-54) НЬ Bethesda Tyr His (B-145) Hb Sydney Val Ala (B-67) HbM Saskatoon His Tur (R-63)

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