There are many types of fractures, but the main categories are displaced, non-displaced, open, and closed. Displaced and non-displaced fractures refer to the alignment of the fractured bone. In a displaced fracture, the bone snaps into two or more parts and moves so that the two ends are not lined up straight. If the bone is in many pieces, it is called a comminuted fracture. In a non-displaced fracture, the bone cracks either part or all of the way through, but does move and maintains its proper alignment. A closed fracture is when the bone breaks but there is no puncture or open wound in the skin.
The strands of DNA are antiparallel, meaning that they are parallel to each other, but in the opposite direction. DNA helicase opens the DNA so that both strands are exposed. During the process of replication, this double helix is unwound, and nucleotide bases are added to both strands going in the 5' to 3' direction.
Lesson Summary. In summary, we have covered what DNA polymerase is and what it does. DNA polymerase is an enzyme that synthesizes new copies of DNA. It carries out this function after DNA helicase has unzipped the DNA thereby creating two single strands of DNA that can be used as templates.he result of DNA polymerase function is two copies of DNA that contain one original and one newly synthesized strand of DNA. To unlock this lesson you must be a Study.com Member.