Extra

Question 0

Inversion mutation

Answer 0

Segment of a chromosome is reversed end to end

Question 1

Coding strand vs template strand

Answer 1

DNA
Template: 3’-5’ (copied during mRNA synthesis- start at 3’ end, but 5’ on mRNA)
Coding: 5’-3’ (same base sequence as mRNA but T replaced w/ U)

Question 2

Translocation

Answer 2

Rearrangement of parts between non-homologous chromosomes

Question 3

Silent mutations

Answer 3

No significant change in phenotype

Question 4

Taq polymerase

Answer 4

Greatly amplifying short sequences of DNA in PCR

Question 5

Lactose Operon

Answer 5

Operon (segment of genes controlled by same promotor) required for the transport and metabolism of lactose in E. coli

Question 6

Lac Operon- lactose present

Answer 6

Lac repressor cannot bind to operator

RNA Polymerase can attach

Question 7

Repressor

Answer 7

A DNA or RNA binding protein that inhibits the expression of genes by binding to the operator
binding repressor blocks the attachment of RNA polymerase to the promoter preventing transcription

Question 8

Lac Operon no lactose

Answer 8

Repressor binds to operator and RNA polymerase cannot attach

Question 9

Inducer

Answer 9

A molecule that regulate gene expression can bind to repressors or disabled repressors
the gene is expressed because RNA polymerase can attach