2.7

Question 1

Two ways in which wild strains are improved

Answer 1

Mutagenesis and recombinant DNA tech

Question 2

Mutagenesis

Answer 2

Exposing micro organisms to forms of radiation or mutagenic chemicals resulting in mutations

Question 3

Recombinant DNA tech invokes the use of:

Answer 3

•Recombinant plasmids
• Artificial chromosomes

Question 4

Vector

Answer 4

DNA molecule used to carry foreign info into another cell

Question 5

Restriction endonuclease

Answer 5

Cut open plasmids and leave sticky ends

Question 6

What is ligase used for

Answer 6

Seal the gene into the plasmid

Question 7

Four components that a plasmid or artificial chromosome must contain

Answer 7

• restriction site
• regulatory sequences
• origin replication
•selectable markers