Ch 11 DNA Replication and Recombination

Question 1

Semi-conservative replication

Answer 1

A mode of DNA replication in which a double-stranded molecule replicates such a way that the daughter molecules are each composed of one parental and one newly synthesized strand.

Question 2

Conservative replication

Answer 2

Replication process in which two newly synthesized strands come together and the parental strands reassociate.

Question 3

Dispersive replication

Answer 3

The parental strands are dispersed into two new double helices following replication. Each strand consists of both old and new DNA.

Question 4

Origin of replication (ori)

Answer 4

Sites where DNA replication begins along the length of a chromosome

Question 5

Replication fork

Answer 5

The Y-shaped region of a chromosome at the site of DNA replication

Question 6

DNA Polymerase I (definition)

Answer 6

An enzyme that participates in the process of DNA replication. Discovered by Arthur Kornberg.

Question 7

DNA Polymerase I (function)

Answer 7

Catalyzes the addition of nucleotides to the growing complement of the DNA template, using a nucleoside triphosphate as the substrate.

Question 8

Primer

Answer 8

In nucleic acids, a short length of RNA or single-stranded DNA required for initiating synthesis directed by polymerases.