Biology

Biology, 29.08.2019 05:30, varonadestiny1109

How many codons equal one amino acid, 1 or 3

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Biology, 23.06.2019 21:10, kim643

Amino acid mrna codons that encode for the amino acid isoleucine auu, auc, aua leucine cuu, cuc, cua, cug, uua, uug valine guu, guc, gua, gug phenylalanine uuu, uuc methionine (also the start codon) aug cysteine ugu, ugc alanine gcu, gcc, gca, gcg glycine ggu, ggc, gga, ggg proline ccu, ccc, cca, ccg threonine acu, acc, aca, acg serine ucu, ucc, uca, ucg, agu, agc tyrosine uau, uac tryptophan ugg glutamine caa, cag asparagine aau, aac histidine cau, cac glutamic acid gaa, gag aspartic acid gau, gac lysine aaa, aag arginine cgu, cgc, cga, cgg, aga, agg stop codons uaa, uag, uga 8. how might a gene mutation be silent, with no observable effect on a cell or an organism? a. 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. b. 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. 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. 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.

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Biology, 27.07.2019 01:30, yfgkeyonna

The three nonsense codons that do not code for any amino acid—uaa, uag, and uga—are also known as a. stop codons. b. antisense codons. c. secondary codons. d. degenerate codons. e. start codons.

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Biology, 23.08.2019 04:40, cjdaly123

Ex.1 which of the following statements regarding mutation rates is correct? a) mutation rates are independent of gene size. b) mutation rates for all genes of an organism are approximately the same. c) mutation rates are independent of exposure to external agents such as uv radiation. d) average mutation rates vary among taxonomic groups. practice problem 64 the amino acid changes noted in parts a-c are the result of changes in dna sequence. for each of these amino acid changes, evaluate whether a single base change in the given codons could account for the change in the amino acid. part a for which codon(s) could a single base change account for this amino acid change? lysine to asparagine select all that apply. uuu aag aaa none of these codons part b for which codon(s) could a single base change account for this amino acid change? alanine to phenylalanine select all that apply. gcg gcu gcc gca none of these codons part c for which codon(s) could a single base change account for this amino acid change? leucine to glutamine select all that apply. cuc uug uua cug cuu cua none of these codons

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Chemistry, 24.10.2019 21:43, angelakrill14091

Remember that each amino acid change is caused by a single nucleotide substitution. use this information to further limit the possible codons for each amino acid.which of the following codons could still code for arginine (arg)? select all that apply.agaaggcgacgc cgg cgu

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