Recitation 5: Copying DNA

Question 1

When DNA is replicated the original DNA strands act as … in the creation of the … strands

Answer 1

templates; new

Question 2

currently monsanto owns the patent on glyphosate, which is commonly known as …

Answer 2

Roundup

Question 3

Roundup is the most popular herbicide used today because it kills a broad spectrum of …. and is easily broken down into … compounds

Answer 3

weeds; non-toxic

Question 4

the catch is that Monsanto also owns the patent on the gene that confers …. gyphosate, which they have transformed into several crops such as corn and soybean to make them “Round-up Ready” or resistant to glyphosate

Answer 4

resistance;

Question 5

many researchers are trying to find novel genes that will also … to glyphosate for both … and … reason

Answer 5

confer resistance; evolutionary; economic

Question 6

recently, a Chinese group found a bacterium, Pseudomonas putida strain 4G-1, which is … to glyphosate. They have … the novel gene, aroA, that is significantly different in sequence from the previous AroA gene

Answer 6

naturally resistant; cloned

Question 7

The AroA gene encodes an enzyme that plays a key role in the biosynthesis of

Answer 7

aromatic amino acids

Question 8

glyphosate disrupts this enzyme and thus the

Answer 8

biosynthesis of aromatic amino acids

Question 9

resistance is found by mutating the AroA gene such that the glyphosate cannot bind to the

Answer 9

resulting protein