Tuesday, December 24, 2013

DNA Replication: A Closer Look

Part A
Correct
This is referred to as specific base pairing.
Part B
Correct
DNA replication is semiconservative.
Part C
Correct
The first step of DNA replication is unwinding the DNA double helix.
Part D
Correct
A replication fork is the transition region between paired and unpaired DNA strands.
Part E
Correct
Since DNA polymerase can assemble DNA only in the 5' to 3' direction, the new strand complementary to the 3' to 5' strand must be assembled in short 5' to 3' segments, which are later joined together by ligase.
Part F
Correct
The synthesis of a DNA strand begins with the formation of an RNA primer.
Part G
Correct
An old DNA strand is used as a template for the synthesis of a complementary new strand.

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