A short segment of an mRNA molecule is shown below. The polypeptide it codes for is also shown:
5'-AUGGUGCUGAAG : methionine-valine-leucine-lysine
Assume that a mutation in the DNA occurs so that the fourth base (counting from the 5' end) of the
messenger RNA now reads A rather than G. What sequence of amino acids will the mRNA now code for? (You do not need a copy of the genetic code to answer the question.)
A) methionine-valine-methionine-lysine
B) methionine-lysine-leucine-lysine
C) methionine-leucine-leucine-lysine
D) methionine-methionine-leucine-lysine
E) methionine-valine-leucine-lysine
D
You might also like to view...
Which of the following disease states is not among those caused by immune complexes?
A. Systemic lupus erythematosus B. Serum sickness C. Hay fever D. Glomerulonephritis
A couple are both heterozygous for the dominant allele for polydactyly. They want to have three
children. What is the probability that all three children will have polydactyly?
a. 3/4 b. 9/64 c. 1/64 d. 27/64 e. 1/2
Which of the following statements about cells is true?
A) All cells have cell walls. B) All cells have internal structures that move. C) All cells are attached to other cells. D) All cells are motile.
A reaction that uses the absence of hemolysis of red blood cells to indicate an antigen—antibody reaction is called a(n)
A) agglutination reaction. B) complement fixation. C) immunofluorescence. D) neutralization reaction. E) precipitation reaction.