First slide

Translation

Question

If the sequence of bases in the coding strand of DNA at a cistron is 5ʹ ATGTCATGGCCCTTATAA 3ʹ, the sequence of amino acid in a polypeptide would be.

Easy

A

Methionine → Serine →Tryptophan → Proline → Isoleucine
B

Methionine → Serine →Tryptophan → Proline → Phenyl alanine
C

Methionine → Serine →Tryptophan → Proline → Leucine
D

Methionine → Threonine →Tryptophan → Proline → Leucine

Solution

The sequence of coding strand of DNA and the mRNA is same except in Uracil and Thymine. The codons and corresponding amino acids are AUG – Methionine, UCA – Serine, UGG – Tryptophan, CCC – proline, UUA – Leucine and UAA is a non-sense codon (does not indicate any amino acid).

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