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padilas
21 day ago
14

A segment of DNA produces methionine, threonine, histidine, aspartate, and glycine when translated. A substitution mutation occu

rs and causes the synthesis of the segment as shown. New DNA Strand: 3' – TACAGGGTGCTACCCACT – 5' Which is the new peptide chain when the new DNA segment is translated?
Biology
1 answer:
garik1379 [1.5K]21 day ago
3 0

Answer:

AUGUCCCACGAUGGGUGA

Methionine- Serine- Histidine- Aspartate- Glycine- Stop

Explanation:

During the process of gene expression, DNA, which contains genetic information, is transcribed into mRNA, and this mRNA is then translated into a sequence of amino acids. This transcription abides by the rules of complementary base pairing, translating as A-U, G-C, and T-A.

In mRNA, nucleotide sequences are organized into sets of three bases known as CODONS. Each of these codons corresponds to a specific amino acid.

In this scenario, a piece of DNA encodes methionine, serine, histidine, aspartate, and glycine after translation. However, a mutation leads to the sequencing shown: 3' – TACAGGGTGCTACCCACT – 5'.

The mutated DNA's corresponding mRNA sequence would be: AUGUCCCACGAUGGGUGA

Throughout translation, these codons yield the following amino acids:

AUG - methionine

UCC - Serine

CAC - Histidine

GAU - Aspartate

GGG - Glycine

UGA - Stop codon

Therefore, the resultant peptide chain from the revised DNA sequence will be: Methionine- Serine- Histidine- Aspartate- Glycine- Stop

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