Question 18M.3.SL.TZ1.9
| Date | May 2018 | Marks available | [Maximum mark: 6] | Reference code | 18M.3.SL.TZ1.9 |
| Level | SL | Paper | 3 | Time zone | TZ1 |
| Command term | Outline, State | Question number | 9 | Adapted from | N/A |
Transformed leaf discs containing recombinant DNA can be used to grow genetically modified crop plants. Discs taken from the new plant can be used to monitor successful uptake of the recombinant DNA.
State one other method by which recombinant DNA can be introduced into a plant.
[1]
viral/bacterial vector / (micro)injection / electroporation / liposomes / biolistics
Outline the role of bioinformatics in the genetic modification of plants.
[2]
a. bioinformatics allows rapid analysis of large numbers of (genetic) samples
b. target genes can be identified/recognized rapidly
c. target gene linked to sequences that control its regulation are also identified
d. target gene introduced into host
Outline the potential advantages of genetically modified plants.
[3]
a. bulk production of important chemicals/medicines
b. resistance to certain environmental conditions/pathogens
c. resistance to herbicides/pesticides / pesticide production by plants (e.g. Bt corn)
d. increase yield/nutritional value
e. increase shelf life
f. example of plant modified and nature / purpose of modification
