2/14/17 lecture: Molecular Genetics III Flashcards Preview

BIOL 1003 > 2/14/17 lecture: Molecular Genetics III > Flashcards

Flashcards in 2/14/17 lecture: Molecular Genetics III Deck (17):
1

dna replication doesnt

need to occur prior to transcription and translation

2

dna replication happens when

synthesis phase- happens just before cell divides

3

rna polymerase

reads- adds ucleotides on to the 3'end - the end that grows

4

DNA polymerase

reads exisitng strand of dna, build to complementary strand - add to 3' end only

5

DNA GROWS FROM

5' to 3' end!!!!

6

semi conservative replication

each new molecule of DNA conserves by half the orgicinal

7

origins of replication

places on chromosome when replication occurs, replication bubbles

8

leading strand siytnhesis is

faster

9

lagging strand synthesis is

slower

10

enzymes

dna polymerase, helicase, ligase

11

ligase does what

glues together Okazaki strands, stick and fuse things together

12

where are okazaki strands found

only in lagging strand

13

mutation

change in genetic makeup/sequence of gene/ of acell

14

why is mutation important

produces heritable variation- phenotypic variation

15

silent mutation

redunant genetic code makes it so there is no effect on what youre coding

16

missense mutation

mutation changes content in gene- now codes for different amino acid

17

nonsense mutation

early stop codon shows up= not functional protein

Decks in BIOL 1003 Class (57):