Name: Selective Breeding and Genetic Engineering
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Question 1 of 12

Question 1
Which practice is described in the following statement. Individuals with desirable characteristics are bred together to produce offspring with those characteristics; this process is repeated over many generations.
- Selective breeding
- Natural selection
- Genetic modification
- In-vitro fertilisation
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Question 2 of 12

Question 2
All of the following are characteristics that humans would want to enhance in plants – Taste, yield, disease resistance, drought resistance and flavour. What is the common feature amongst these characteristics?
- They are desirable (we want them)
- They are undesirable (we don't want them)
- They are neutral (we don't mind them)
- They will all evolve naturally
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Question 3 of 12

Question 3
Which of the following is a realistic scenario:
- Horses are bred to be slow and clumsy
- Cows are bred to produce more milk
- Dogs are bred to have a worse sense of smell
- Birds are bred to fly higher
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Question 4 of 12

Question 4
Which practice is described in the following statement: Modifying the genome of an organism to introduce desirable characteristics
- Selective breeding
- Genetic engineering
- In-vitro fertilisation
- Natural selection
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Question 5 of 12

Question 5
Which of the following is a risk of genetic engineering of crops?
- Changed nutritional value
- Enhanced taste
- Enhanced looks
- Better value for money
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Question 6 of 12

Question 6
Which of the following are ethically consistent reasons we might carry out genetic engineering and selective breeding?
- To grow more food for human consumption
- To produce medicines for human consumption
- To produce raw materials for manufacturing
- To see what happens if we do it
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Question 7 of 12

Question 7
Which of the following is a potential risk of farming large numbers of individual animals or plants with very similar genomes.
- Diseases would affect all organisms
- They would not taste as good
- It would be more difficult to tell whose farm you are in
- Individuals become unhappy when there are too many of the same species around them
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Question 8 of 12

Question 8
Leaves, pathogens, genes, stems
- Complete the sentence: A risk of genetic engineering of crops is that the could be passed on to wild plants.
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Question 9 of 12

Question 9
Why might we choose to perform genetic modification rather than use selective breeding in the following scenario?

There is a sudden need for camels to be drastically smaller, we need to have a population of small camels within 10 years.
- Each generation of camels would take too long to breed, selective breeding needs many generations to be effective
- Camels are naturally large and cannot survive with smaller bodies
- Camels are too aggressive for selective breeding to work
- It would be too expensive as camels each cost £150,000
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Question 10 of 12

Question 10
Why might we choose to perform genetic modification rather than use selective breeding in the following scenario?

There is demand in the marketplace for farmed fish that tastes like beef.
- It might not be possible to find fish that already taste at all like beef.
- Fish are too numerous to selectively breed
- You cannot selectively breed with fish because they spawn into the water and do not reproduce like mammals
- Fish have special genes that reset after 3 generations, meaning any changes would be deleted
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Question 11 of 12

Question 11
When performing genetic engineering of bacteria, why do we use the same restriction enzyme to cut out the DNA from an organism and to cut open the plasmid?
- Because it creates sticky ends that join together when the DNA is put into the plasmid
- Because it saves money to use the same product, rather than buying two different enzymes
- Because that is the only enzyme that can cut DNA
- Because thats the way it was done by the scientist who invented the technique
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Question 12 of 12

Question 12
What is the role of ligase in genetic engineering using bacterial plasmids?
- Cutting open DNA molecules
- Cutting open plasmids
- Joining the sticky ends
- Inserting the plasmids back into the organism
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