Chapter 13 (Problem 13b) Using Figure 11.5, which amino acids could be produced

Question

Chapter 13

(Problem 13b) Using Figure 11.5, which amino acids could be produced by a single transversion in the Phe codon?

Please explain. thanks!

D. Phenylalanine, proline, serine, or leucine

A. Isoleucine, tyrosine, valine, leucine, or cysteine B. Leucine, serine, or phenylalanine C. Methionine, phenylalanine, valine, arginine, tryptophan, leucine, isoleucine, tyrosine, histidine, glutamine, or STOP

D. Phenylalanine, proline, serine, or leucine

Second base UAU TyruGC UCU UCC UUUA Leu ucG UCG UUG Leu/UCA Ser UAC Tyr CUU UUC UGC Cys UAA Stop UGA Stop A UAG Stop UGG Trp G g CUA Leu/ CCC CCG CCU cUC Leu cCA CGU CGC CAC CAG GIn CGA Arg AAU AAC Pro aCUA CUG 4 AUUU ACU . |AUC lle | ACC ACA AUG Met ACG GCU AGc Ser AGA Arg G AGG Asn Thr AUA AAG Lys AGA GCA Ala GAc Asp GGU GAA GUU GGC GGA Val GUA GUG Glu GCG GAG

Explanation / Answer

Answer:A. Isoleucine, tyrosine, valine, leucine, or cysteine

Transversion is a interchange of purine base with pyrimidine bases

according to question single transversion may lead to:

A,G = purines

T (or)U , C =pyrimdine

UUU (Phe) =After single transversion,possible combinations   

AUU(Ile),UAU(Tyr),UUA(Leu)

GUU(Val),UGU(Cys),UUG(Leu)

UUC (Phe)= After single transversion, possible combination      

AUC(Ile), UAC(Tyr),UUA(Leu)

.GUC(Val),UGC(Cys),UUG(Leu)

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