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What would happen if in a gene encoding ...

What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA ?

A

A polypeptide of 49 amino acids will be formed

B

A polypeptide of 25 amino acids will be formed

C

A polypeptide of 24 amino acids will be formed

D

Two polypeptide of 24 and 25 amino acids will be formed

Text Solution

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The correct Answer is:
C
UAA is the stop codon hence polypeptide chain will not grow after 24th amino acid in the absence of new initiating codon rest of codons will not be able to translate
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ARIHANT NEET-GENE, ITS EXPRESSION AND REGULATION-Chapter Exercise (C) Medical entrance s gallery
  1. The diagram shows an important concept in the genetic implicatio of D...

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  2. Which enzyme/s will be produced in a cell in which there is a nonsense...

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  3. What would happen if in a gene encoding a polypeptide of 50 amino acid...

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  4. The number of codons that code different amino acids is

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  5. Some amino acids are coded by more than one codon

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  6. What is correct gene expression pathway ?

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  7. What is not true for genetic code ?

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  8. Okazaki is known for his contribution to the understanding of

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  9. During replication of DNA, Okazaki fragments are formed in the directi...

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  10. which of the following amino acid codon was used by khorana?

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  11. Which one of the following statements regarding lac operon is correct?

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  12. Select the true statement

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  13. If one strand of DNA has the nitrogenous base sequence as ATCTG, what ...

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  14. Antibiotic inhibiting interaction between tRNA and mRNA during protein...

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  15. Out of 64 codons, the number of codons with GGGis

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  16. Removal of RNA polymerase III from nucleoplasm will affect the synthes...

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  17. DNA has equal number of adenine and thymine residuces (A=T) and equal ...

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  18. Given below is a sample of a portion of DNA strand giving the base seq...

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  19. Peptide synthesis inside a cell takes place in

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  20. The scientist who was awarded Nobel prize in 1959 for in vitro synthes...

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