A mutation causes a codon to change from UAC to UAU, both of which specify tyrosine. This is an example of
A.a frameshift mutation
B.missense mutation
C.silent mutation
D.nonsense mutation
What is a major difference between DNA polymerase I and DNA polymerase III?
A.DNA polymerase I synthesizes DNA on leading strands and DNA polymerase III synthesizes DNA on lagging strands
B.DNA polymerase I synthesizes DNA on lagging strands and DNA polymerase III synthesizes DNA on leading strands
C.DNA polymerase I repairs DNA and DNA polymerase III synthesizes DNA in the 3׳ to 5׳ direction
D.DNA polymerase I synthesizes DNA in the 5׳ to 3׳ direction and DNA polymerase III synthesizes on lagging strands
An experiment started with 15N15N DNA. After two generations in 14N medium, E. coli will have
A.
25% 14N14N and 75% 15N15N
B.
50% 14N14N and 50% 15N15N
C.
75% 15N14N and 25% 14N14
D.
50% 15N14N and 50% 14N14N
E.
50% 15N14N and 50% 15N15N
creates fragments on the lagging strand.
A.DNA polymerase III
B.DNA gyrase
C.DNA polymerase II
D.DNA helicase
E.DNA polymerase I
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