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:

Preneed

Planning and arrangement for services and goods before they are needed, often in the context of funeral services.

Prefunding

The arrangement and payment for services or goods in advance, often used in the context of making arrangements for one's own funeral before death.

Prearranging

The act of planning or arranging in advance, often used in the context of funeral or burial arrangements.

Funeral Homes

Businesses that provide services and facilities for the preparation, management, and conduct of funerals.