The base-pair sequence in a region of a gene coding for a polypeptide with the s

Question

The base-pair sequence in a region of a gene coding for a polypeptide with the sequence Met Tyr Arg Gly Ala is:

Strand A - CCTACATATTTAGTACGTGGGGACATGTACCG

Strand B - GGATGTATAAATCATGCACCCCTGTACATGGC

Part A - Which strand is the template for transcription?

Part B - What is the polarity of the strands of the DNA double helix? Indicat this clearly on the sequence above.

Part C - What is the nucleotide sequence of the mRNA transcribed from this DNA? (Assume that the entire template strand is transcribed, that is, you do not need to determine where transcription initiates.) Include the polarity of the mRNA strand in your answer.

Part D - Which amino acid is at the carboxy terminal end of the polypeptide?

Explanation / Answer

strand A is template for transcription.

5' CCTACATATTTAGTACGTGGGGACATGTACCG 3'

3' GG ATG TAT AAA TCA TGC ACC CCT GTA CAT GGC 5'

Nucleotide sequence transcribed would be-

CGG TAC ATG TCC CCA CGT ACT AAA TAT GTA

its Valine at c terminus..

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