Flashcards · Biology · Selective Breeding and Genetic Engineering
Evaluating Genetic Engineering and Selective Breeding
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What does it mean to evaluate?
Weigh up the benefits and drawbacks, and reach a judgement.
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Give one benefit of GM crops.
Higher yield, pest resistance, or more nutrients.
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Give one risk of GM crops.
Pests may become resistant, or genes may spread to wild plants.
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Give one ethical objection to genetic engineering.
Some people think it is wrong to interfere with genes.
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Why is GM insulin considered a success?
It is safe, cheap and available in large amounts.
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Give a practical risk of gene therapy.
The vector could put the gene in the wrong place, or the immune system could attack it.
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Why is changing genes in gametes controversial?
The change would be passed on to later generations.
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Give a benefit of selective breeding.
Higher yields, or disease-resistant crops.
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Give a risk of selective breeding.
Reduced variation and inbreeding.
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Give a welfare issue of selective breeding.
Breeds with health problems, such as breathing difficulties.
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Why are patents on GM seeds an issue?
Farmers may depend on companies and have to buy seed each year.
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What is food security?
Having a reliable supply of enough nutritious food.
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Which method is faster, genetic engineering or selective breeding?
Genetic engineering.
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Which method can move genes between species?
Genetic engineering.
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What should an evaluation end with?
A conclusion with a reason.
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Common mistake in evaluation questions?
Listing points without a conclusion or evidence.