Unit 6- Topic 2

Question 1

Primers

Answer 1

the foundation for DNA synthesis

Question 2

Telomeres

Answer 2

repeating units of short nucleotide sequences that do not code for genes.
Cap the end of DNA to help postpone erosion.

Question 3

Telomerase

Answer 3

Adds telomeres to DNA

Question 4

Mismatch Repair

Answer 4

enzymes remove and replace the incorrectly paired nucleotide.

Question 5

Nuclease

Answer 5

can remove segments of nucleotides

Question 6

Where does DNA replication begin?

Answer 6

at origins of replication

Question 7

When is a replication fork formed?

Answer 7

When various proteins attach to the origin of replication and open the DNA.

Question 8

Primase does what

Answer 8

initiates replication

Question 9

Primase initiates replication by

Answer 9

adding short segments of RNA called primers to the parental DNA strand

Question 10

Conservative model

Answer 10

parental strands are fully conserved. direct synthesis of an entirely new double stranded molecule.

Question 11

How does the dispersive process work?

Answer 11

1. material is dispersed randomly between the two daughter molecules.
2. after 1 replication, daughter molecules have a random mix of parental and new DNA.