New genes for old - B3g

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  • Created by: iram_f
  • Created on: 18-01-15 15:23
What are the advantages of genetic engineering?
Gene therapy is when body or sex cells are changed so any known genetic disorders can be treated; the faulty gene is replaced by a correct gene. Also, crops that are resistant to frost, herbicides and disease can be developed.
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What occurs during selective breeding?
1) Decide what characteristics you want the organism to express. 2) Choose parents that show the desired characteristics. 3) Cross-breed the chosen organisms. 4) Select the best cross-breed offspring. 5) Repeat the selective breeding process.
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What occurs during genetic engineering?
1) Select the characteristic you want expressed. 2) Identify and isolate the gene. 3) Insert the gene into the chromosome of a different organism. 4) Replicate the gene in the organism so it can produce the particular protein.
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What are the disadvantages of genetic engineering?
GM could pose unexpected problems as you are combining genes from different species'. Moreover, some are concerned about how our bodies will react to normal food after yeas of eating GM food.
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What are the risks of selective breeding?
As it involves animals that are closely related, breeding them causes a reduction in the gene pool (variety of alleles available). So there is less genetic variation, increasing the chance of a harmful recessive gene being expressed.
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Other cards in this set

Card 2

Front

What occurs during selective breeding?

Back

1) Decide what characteristics you want the organism to express. 2) Choose parents that show the desired characteristics. 3) Cross-breed the chosen organisms. 4) Select the best cross-breed offspring. 5) Repeat the selective breeding process.

Card 3

Front

What occurs during genetic engineering?

Back

Preview of the front of card 3

Card 4

Front

What are the disadvantages of genetic engineering?

Back

Preview of the front of card 4

Card 5

Front

What are the risks of selective breeding?

Back

Preview of the front of card 5

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