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How can only four different nucleotides be used to construct a genetic code that will specify 20 different amino acids? These questions are presented.

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Solution Summary

Triplet code and others are defined.

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This is possible because the genetic code is triplet code. The four different nucleotides, when combined in-groups of three, ...

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  • Transcription

    If we look at the second sequence, we see a GAX as the second triplet, but in the first sequence, the second triplet is ACX. Clearly, the G was added.

  • Amino Acids and Codons

    3 nucleotides code for each amino acid and the triplet code is known as a codon or coding unit. In 150 amino acid residues the number of codons present = 150/3 = 50. The amino acids and codons are examined.

  • If DNA and a base were inserted at the beginning of the 5' end of the molecule, how would that affect protein synthesis and the resultant protein?

    Remember, amino acids are read as a triplet in the code. ________________________________________________ Thanks for using BrainMass. Have a great day. Stephen Allen OTA 104330

  • Nature versus Nurture and the Creation of Proteins

    This means that there are some amino acids that are coded for by more than one triplet of RNA bases. For example, CGU, CGC, CGA, and CGG all code for the amino acid arginine.

  • Bacterial mRNA

    Code
    M F S G G Y S W S 1 letter A. A.

  • Question about DNA code

    So, we break up the mRNA sequence into triplets like this: mRNA = AUG AAU GGC UCU AAG AAC AAA UAG Then we look up each triplet in the table.

  • Triplet codons and probability

    8353 Triplet codons and probability Find the number of triplet codons feasible from 4 ribonucleotides A, U, G and C containing a) no uracil, b) one or more uracils. see attachment 'triplet codon and probability' Triplet codon and probability Sol:

  • Pythagorean triangles

    multiplied by 5)and 700, 855, 1105 (each member in the second triplet multiplied by 5) Again, considering 1105 =221 x 5 and we have the primitive triplet 3, 4, 5 hence we have non primitive triplet 663, 884, 1105 (each member in the triplet is multiplied

  • Effect of point mutation on protein synthesis

    A base substitution does not affect the reading frame of the protein coded as a single base is substituted,only a single amino acid change may occur, which is also not much affected if the last base of the triplet code is substituted.

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