What is the amino acid sequence in the polypeptide segment translated from the mRNA base sequence of AGU- UUU- UCC- GGG- UCG?

Serine- Phenylalanine- Serine- Glycine- Serine

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Serine- Serine- Phenylalanine- Glycine- Serine

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Phenylalanine- Serine- Serine- Glycine- Serine

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Serine- Glycine- Serine- Phenylalanine- Serine

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Solution

The correct option is C Serine- Phenylalanine- Serine- Glycine- Serine
An mRNA with sequence AGU- UUU- UCC- GGG- UCG will code for polypeptide with amino acid sequence serine- phenyalanine- serine- glycine- serine. This makes option A correct.
Options B and C are incorrect as codes UCA, UCG, UCU, UCC, AGU and AGC code for serine; UUU codes.
Option D is incorrect as codons UUU and UUC code for phenylalanine.
Therefore, the correct answer is option A.

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