HARD
AS and A Level
IMPORTANT
Earn 100
Describe the features of the restriction sites shown in the table below.
Important Questions on Genetic Technology
HARD
AS and A Level
IMPORTANT
Summarise the advantages of using plasmids as vectors in genetic engineering.
HARD
AS and A Level
IMPORTANT
Suggest why the primers used in PCR do not anneal together.
MEDIUM
AS and A Level
IMPORTANT
Explain why only certain DNA polymerases, such as Taq polymerase, are used in PCR.
HARD
AS and A Level
IMPORTANT
State what happens to DNA during one cycle in PCR.
HARD
AS and A Level
IMPORTANT
Suggest why the FBI uses STRs from the X and Y chromosomes in its database.
HARD
AS and A Level
IMPORTANT
Gene therapy for diseases such as ADA-SCID and LCA is possible because they are caused by recessive alleles. Explain how it might be possible to treat or cure Huntington's disease which is caused by a dominant allele.
HARD
AS and A Level
IMPORTANT
Summarise the challenges posed by gene therapy that have had to be overcome by researchers.
HARD
AS and A Level
IMPORTANT
What are the limits to gene therapy? Discuss the social and ethical issues surrounding this technology. Decide which procedures are ethical and which are not.
