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Home Q & A Board Biology-Related Homework Help General Biology
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mkshawty mkshawty
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12 years ago
WRITTEN ANSWER
-val-his-leu-thr-pro-glu- Amino Acids
-GUU-GAU-UUG-ACU-CCC-GAA- mRNA strand

a) Write the DNA template strand that transcribes the above mRNA molecule

b) What kind of mutation occurs if the second nucleotide in the DNA template is replaced by C
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wrote...
#1
12 years ago
a) DNA: CAA - CTA - AAC - TGA - GGG - CTT

b) It'll be silent because it'll change GUU to GUG which codes for the same amino acid.
wrote...
#2
12 years ago
Quote from: avg1000 (12 years ago)
a) DNA: CAA - CTA - AAC - TGA - GGG - CTT

b) It'll be silent because it'll change GUU to GUG which codes for the same amino acid.

for part B, the *2nd* nucleotide in the DNA template has changed from A to C. Hence, the first AA of the sequence changes from valine (GUU) to glycine (GGU). Did I miss something?
wrote...
#3
12 years ago
Quote from: bioboi (12 years ago)
Quote from: avg1000 (12 years ago)
a) DNA: CAA - CTA - AAC - TGA - GGG - CTT

b) It'll be silent because it'll change GUU to GUG which codes for the same amino acid.

for part B, the *2nd* nucleotide in the DNA template has changed from A to C. Hence, the first AA of the sequence changes from valine (GUU) to glycine (GGU). Did I miss something?

Oh, you're right. I don't know why I did GUG. >< Yeah, so for part b it should be missense mutation instead because it just changes that one amino acid.
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