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Amino acidmRNA codons that encode for the amino acidIsoleucineAUU, AUC, AUALeucineCUU, CUC, CUA, CUG, UUA, UUGValineGUU, GUC, GUA, GUGPhenylalanineUUU, UUCMethionine (also the start codon)AUGCysteineUGU, UGCAlanineGCU, GCC, GCA, GCGGlycineGGU, GGC, GGA, GGGProlineCCU, CCC, CCA, CCGThreonineACU, ACC, ACA, ACGSerineUCU, UCC, UCA, UCG, AGU, AGCTyrosineUAU, UACTryptophanUGGGlutamineCAA, CAGAsparagineAAU, AACHistidineCAU, CACGlutamic acidGAA, GAGAspartic acidGAU, GACLysineAAA, AAGArginineCGU, CGC, CGA, CGG, AGA, AGGStop codonsUAA, UAG, UGAHow might a gene mutation be silent, with no observable effect on a cell or an organism?A) Several codons are stop codons. A gene mutation that inserts a stop codon when only a few amino acids remain in the peptide sequence would have no observable effect on the cell or the organism.B) Many amino acids are encoded by multiple codons. A gene mutation that encodes the same amino acid would have no observable effect on the cell or the organism.C) Many proteins are superfluous to the function of a cell. A gene mutation in a gene that encodes an unnecessary protein would have no observable effect on the cell or the organism.D) Codons are complementary to anticodons in tRNA. A gene mutation that changes a codon to its anticodon would have no observable effect on the cell or the organism.

User Hanynowsky
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Answer: B

Explanation: Silent mutation occurs when codon is altered to produce an amino acid with similar function so that the fuction of protein is not significantly changed.

User Gautam Sheth
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