Question

am I doing question 1 right? and how do I do questions 2 and 3. can't figure out

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Write the complementary DNA strand of the following sequences :

A)

5’-AACGTACGATCGATGCACATGCATGGCTACAT-3’

3’-TTGCATGCTAGCTACGTGTAGCTACCGATGTA-5’

B)

3’-CATGGGTATGCATGTACGTACGTCGTATATCG-5’

5’-GTACCCATACGTACATGCATGCAGCATATAGC-3’

            

C)

5’-CGCGATCGAGCGATCGACGAATGCCTAGTCAT-3’

3’-GCGCTAGCTCGCTAGCTGCTTACGGATCAGTA-5’

D)

3’-CATAACGAGCTGCTAGCTATTTTTAAAACCCCG-5’

5’-GTATTGCTCGACGATCGATAAAAATTTTGGGGC-3’

E)

5’-CCGCTTTCGCTATTATAAAAAGGGCTATAACAT-3’

3’-GGCGAAAGCGATAATATTTTTCCCGATATTGTA-5’

2.Rewrite the above original sequences as mRNA

3.Using the above mRNA sequences find the polypeptide chain.

Answer 1

1) all th above DNA sequences written are absolutely correct..!! You don't need to change anything in the complementary DNA strand..

2) for converting the DNA sequence to RNA just rewrite the sequence replacing 'T' with 'U'...!! As I have done here..!! Similarly all sequence' 'T' has to be replaced by 'U'..

The RNA sequence will be the same complementary sequence of the template DNA whre' T' is replaced by 'U'. All the 3'-5' will act as a RNA strand sequence..!!

UUGCAUGCUAGCUACGUGUAGCUACCGAUGUA

3) just seeing this table match the triplet code of the nucleotide and match the amino acids coded by it.. U will able to write the protein sequence..!!

Second letter UCU UCC UCA UCGJ UAU UUC UAA Stop UGA StopA İUAG Stop!UGG Trp | G CUC Arg A CUA Leu CCA Pro AUU AUC lle ACC AAUsnAGU AGC AUG Met ACG GUC GAATGGAA