1.) An RNA molecule has the following percentrages of bases A = 27% , U=38% ,...
1.) An RNA molecule has the following percentrages of bases A = 27% , U=38% , C=20% , G= 15%
a. Is this RNA molecules single stranded or double stranded? How Cant you tell?
b. What would be the percentage of each of the bases in the template strand of the DNA that contains the genes for this RNA?
2.) Given the following DNA
5' ATG GCG AGG CGG CAGCTGTTATGGTGA - 3'
a. What is the transcript (mRNA) sequence?
b. What might be the amino acid sequence of the translated protein?
3.) In the sequence above suppose that the 18th nucloetide of the template was mutated to a T.
a. Now what is the mRNA sequence ?
b. What is the amino acid sequence of the translated protein?
c. Would this protein be able to carry out its function?
Homework Answers
1- A - In the case of Double-stranded RNA Adenine is equal to the Uracil and Guanine is equal to the Cytosine.
Since A is not equal to U and G is not equal to C. So RNA is molecule is single-stranded.
B- If DNA has Adenine then RNA polymerase will add Uracil at its complementary base in the RNA. For Thymine, Adenine is added. For Guanine, CYtosine is added and for Cytosine, guanine is added.
So the template DNA strand has - T = 27% , A=38% , G=20% , C= 15%
2- A- mRNA sequence - AUGGCGAGGCGGCAGCUGUUAUGGUGA
Protein sequence - Met Ala Arg Arg Gln Leu Leu Trp
3- New DNA sequence - Given that in the template strand 18th nucleotide is mutated to T. It means in the coding strand new nucleotide will be A.
ATG GCG AGG CGG CAG CTA TTATGGTGA
mRNA sequence - AUGGCGAGGCGGCAGCUAUUAUGGUGA
Protein sequence - Met Ala Arg Arg Gln Leu Leu Trp
Since there is no change in the amino acid sequence, So protein will carry out its normal functions.
Please write to me if you need more help.
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1.) An RNA molecule has the following percentrages of bases A =
27% , U=38% ,...
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Answer The following Please,
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