Molecular Genetics Flashcards
(12 cards)
1
Q
Helicase
A
Unwinds DNA strand
2
Q
Topoisomerase
A
Relaxes super oiling in front of replication fork
3
Q
Primase
A
Lays down RNA primers
4
Q
DNA polymerase
A
Builds new strand of DNA continuously on leading strand and discontinuously on lagging strand
5
Q
Ligase
A
Joins the fragments on the lagging strand
6
Q
RNA polymerase builds mRNA in what direction? By reading in which direction?
A
Builds 5’—>3’
Reads 3’ —> 5’
7
Q
Mitochondrial DNA
A
Mother to child
8
Q
Transcription factors
A
Turn on and off gene expression
9
Q
Translation
A
Codons code for amino acids
10
Q
Missense mutation
A
Codes for different amino acid
11
Q
Nonsense
A
Change from amino acids to a stop codon
12
Q
Operons
A
Gene regulation in prokaryotes
