B3 - Cloning

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What is nuclear transfer?
Removing the nucleus from a body cell and placing it into an egg cell that has had its nucleus removed
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What is the point of cloning animals?
-Mass-produce animals with desirable characteristics -Produce animals that have been genetically engineered to provide human products -Produce human embryos to supply stem cells for therapy
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What is an example of an ethical issue involved in human cloning?
It is wrong to clone people as they will not be 'true individuals'
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What were the steps involved when dolly was produced y nuclear transfer?
1. The udder cell had its nucleus removed 2. The egg cell nucleus was replaced with the nucleus from an udder cell 3. The egg cell was electric shock to make it divide 4. The embryo was implanted into a surrogate mother sheep 5.The embryo is a clone
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What are the risks of cloning technology?
Genetically modfied animals could be cloned to supply replacement organs for humans and some people are worried that this could lead to risk or diseases from animal to human
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What are the advantages of cloning plants?
Growers can be sure of the characteristics of each plant since all the plants will be genetically identical. It is also possible to mass produce plants that may be difficult to grow from seeds.
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What are the disadvantages of cloning plants?
if the plants become susceptible to disease or to change in the environmental conditions, then all the plants will be affected. There is lack of genetic variation in the plants.
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How can plants be cloned?
Tissue culture
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What are the steps in tissue culture?
1. A plant is selected that has certain characteristics 2. A large number of small pieces of tissue are then cut from the plant 3. The small pieces of tissue are grown in test tubes or dishes 4. Aseptic technique is used to stop microbes from infecti
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What is easier: cloning plants or cloning animals? Why?
Cloning plants because many plant cells retain their ability to differentiate. Animal cells however lose this ability at an early stage
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Card 2

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What is the point of cloning animals?

Back

-Mass-produce animals with desirable characteristics -Produce animals that have been genetically engineered to provide human products -Produce human embryos to supply stem cells for therapy

Card 3

Front

What is an example of an ethical issue involved in human cloning?

Back

Preview of the front of card 3

Card 4

Front

What were the steps involved when dolly was produced y nuclear transfer?

Back

Preview of the front of card 4

Card 5

Front

What are the risks of cloning technology?

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Preview of the front of card 5
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