The High Fidelity of DNA Replication Is Due Primarily to Immediate

question 19

Essay

The high fidelity of DNA replication is due primarily to immediate error correction by the 3' -> 5' exonuclease (proofreading)activity of the DNA polymerase.Some incorrectly paired bases escape this proofreading,and further errors can arise from challenges to the chemical integrity of the DNA.List the four classes of repair mechanisms that the cell can use to help correct such errors.

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Definitions:

President Roosevelt

Refers to either Theodore Roosevelt or Franklin D. Roosevelt, both of whom served as President of the United States and left significant impacts on national policy and history.

Embargo

A government-imposed ban on trade or specific goods with a particular country, often used as a diplomatic or economic sanction.

Lend-Lease Act

A program initiated by the United States during World War II that allowed the U.S. to supply Allied nations with vast amounts of military materiel while avoiding direct involvement in combat.

Military Supplies

Equipment, tools, vehicles, and logistical support materials utilized by armed forces for the purposes of national defense and warfare operations.