Chapter 8 -2 Flashcards
(9 cards)
1
Q
What makes the diversity of life possible?
A
The order/sequence of ATGC’s
2
Q
The two gene strands run in opposite directions contain how many base pairs?
A
one gene= 800 base pairs
another gene= 10,000 base pairs
3
Q
How does DNA replicate and who found this?
A
semi conservation replication
Meselson-Stahl, 1958
4
Q
Replication always occurs?
A
in the 5’->3’
5
Q
What does DNA replication require many of?
A
enzymes
6
Q
What do DNA helicases do?
A
open parallel DNA by breaking H-bonds
7
Q
What adds RNA nucleotides?
A
Primase
8
Q
What do DNA polymerases do?
A
attach A,T,G,C to the corresponding base on the template
9
Q
What seals openings in the sugar phosphate backbone?
A
DNA ligases
