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Olegator [25]
2 years ago
11

I NEED THIS ANSWER Transcribe and Translate this DNA sequence:

Biology
1 answer:
lilavasa [31]2 years ago
8 0

Answer:

Given the sequence of DNA bases sequence:

  • <em>DNA             </em><em>TAC GAG TTG CCG TAT ATT GCG CTC GAC TGC</em><em> </em>

Transcription into mRNA and translation would be:

  • <em>mRNA          </em><em>AUG CUC AAC GGC AUA UAACGC GAG CUG ACG </em>
  • <em>Amino acids </em><em>Met (Start)-Leu-Asn-Gly-Ile-Stop-Arg-Glu-Leu-Thr</em>

Explanation:

Genetic information is found in DNA, and this information depends on a sequence of bases —adenine, thymine, cytosine and guanine— in the DNA molecule.

Transcription consists of creating a strand of mRNA, from the sequence of bases in a DNA strand, which it assumes:

  1. <em>The sequence of RNA is complementary to the DNA sequence that forms it, following the complementarity of bases. </em>
  2. <em>In RNA there is no base thymine, which is replaced by uracil. </em>

The sequence of mRNA is organized into triplets or codons, each of which encodes for the synthesis of an amino acid (translation), indicating both the start of a polypeptide chain and the stop of protein synthesis.  Knowing this information, it can be stated that, following a sequence of DNA bases, the resulting transcription and translation would be:

  • <em>DNA                </em><em>TAC GAG TTG CCG TAT ATT GCG CTC GAC TGC</em><em> </em>
  • <em>Transcription </em><em>AUG CUC AAC GGC AUA UAACGC GAG CUG ACG </em>
  • <em>Translation    </em><em>Met (Start)-Leu-Asn-Gly-Ile-Stop-Arg-Glu-Leu-Thr</em>

Resulting amino acids and indications in protein synthesis Methionine (inicio), Leucine, Asparagine, Glycine, Isoleucine —Stop— Arginine, Glutamine, Leucine and Tyrosine.

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Identify all the amino acid-specifying codons where a point mutation (a single base change) could generate a nonsense codon.
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Answer:

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Lysine (Lys): codons AAA, AAG, UCG

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Leucine (Leu): codons UUG, UUA

Tyrosine (Tyr): codons UAC, UAU

Tryoptophan (Trp): codon UGG

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