Biology GCSE cloning Watch

parkerposse
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Can someone please help me?
What is the difference between animal clones using embryo transplants and adult cell cloning. I am getting so confused. How will I know which is the right one to write about in the exam? How will the question be worded and what are the key words that will help me? I keep getting the practice questions wrong and am really worried I am going to drop a lot of marks.
Thanks to anyone who can help.
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studyblogg
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Hi, which exam board are you doing? I'm doing Edexcel and i wasnt aware that there is a connection between cloning and embryonic stem cells topics. I thought that the exam questions would just say 'explain how you would clone a mammal'/'outline the risks of cloning mammals'/'what are the advantages of cloning mammals'?

Also which revision guides are you using?
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RachJess4
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adult cell cloning: take any cell (usually a skin cell) from the sheep you want to clone (let's call it sheep A) and take out the nucleus. Then take an egg cell from another sheep (sheep B), take out the nucleus and discard it. Then place the nucleus from sheep A into that empty egg cell, and then give it an electric shock to trigger cell division, then place it into the uterus of another sheep to grow (sheep C).

embryo cloning: take an embryo from sheep A at an early stage in the embryo's development before the cells become specialised, then separate out the individual cells and place into different surrogate mothers.

They'll always specify whether they're talking about embryo cloning or adult cell cloning so don't worry
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parkerposse
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(Original post by studyblogg)
Hi, which exam board are you doing? I'm doing Edexcel and i wasnt aware that there is a connection between cloning and embryonic stem cells topics. I thought that the exam questions would just say 'explain how you would clone a mammal'/'outline the risks of cloning mammals'/'what are the advantages of cloning mammals'?

Also which revision guides are you using?
Hi
I'm doing AQA and using CGP revision guide. On one page there are notes on plant cloning from cuttings and tissue culture, animal clones using embryo transplants and adult cell cloning :confused::confused::confused::confused: I am soo confused. Obviously I know when to use the plant cloning, but how will I know when and which one is the embryo trnsplant or cell cloning???
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parkerposse
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(Original post by RachJess4)
adult cell cloning: take any cell (usually a skin cell) from the sheep you want to clone (let's call it sheep A) and take out the nucleus. Then take an egg cell from another sheep (sheep B), take out the nucleus and discard it. Then place the nucleus from sheep A into that empty egg cell, and then give it an electric shock to trigger cell division, then place it into the uterus of another sheep to grow (sheep C).

embryo cloning: take an embryo from sheep A at an early stage in the embryo's development before the cells become specialised, then separate out the individual cells and place into different surrogate mothers.

They'll always specify whether they're talking about embryo cloning or adult cell cloning so don't worry
So basically, one starts with a cell and one starts with an embryo. How thick am I??? Thank you so much for making this so much clearer, and the fact that they tell you what they are looking for means I'll be able to sleep better tonight!
Thank you so much for your help xx
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studyblogg
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Ohhh! I'm doing edexcel and we only have to know about the usual method of cloning and not about the embryonic - good luck! Thanks for replying


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RachJess4
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(Original post by parkerposse)
So basically, one starts with a cell and one starts with an embryo. How thick am I??? Thank you so much for making this so much clearer, and the fact that they tell you what they are looking for means I'll be able to sleep better tonight!
Thank you so much for your help xx
No problem, glad I could help!
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