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qwerty
11.04.14, 18:02
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Assignment Expert
11.04.14, 15:04
Eukaryotic DNA topoisomerases are an enzymes that act to relax
supercoils generated during transcription and DNA replication. Because
of the size of the eukaryotic chromosome, removal of these supercoils
can only be accomplished locally by introducing breaks into the DNA
helix. Topo I mediates DNA relaxation by creating a transient
single-strand break in the DNA duplex. Type II topoisomerases cut both
strands of the DNA helix simultaneously. These transient nicks allows
the broken strand to rotate around its intact complement, effectively
removing local supercoils. Thus, the correct answer is C
qwerty
09.04.14, 18:24
A. Both A and R are true and R is the correct explanation of A. B.
Both A and R are true but R is NOT the correct explanation of A. C. A
is true but R is false. D. Both A and R are false.
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Dear qwerty. You're welcome. We are glad to be helpful. If you really liked our service please press like-button beside answer field. Thank you!
Thanks Experts...
Eukaryotic DNA topoisomerases are an enzymes that act to relax supercoils generated during transcription and DNA replication. Because of the size of the eukaryotic chromosome, removal of these supercoils can only be accomplished locally by introducing breaks into the DNA helix. Topo I mediates DNA relaxation by creating a transient single-strand break in the DNA duplex. Type II topoisomerases cut both strands of the DNA helix simultaneously. These transient nicks allows the broken strand to rotate around its intact complement, effectively removing local supercoils. Thus, the correct answer is C
A. Both A and R are true and R is the correct explanation of A. B. Both A and R are true but R is NOT the correct explanation of A. C. A is true but R is false. D. Both A and R are false.
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